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		<id>http://wiki.sommarmatte.se/wikis/2009/bridgecoursemechanics/index.php?action=history&amp;feed=atom&amp;title=20._Video</id>
		<title>20. Video - Revision history</title>
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		<updated>2026-04-07T22:15:38Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>http://wiki.sommarmatte.se/wikis/2009/bridgecoursemechanics/index.php?title=20._Video&amp;diff=1776&amp;oldid=prev</id>
		<title>Ian at 15:07, 27 April 2011</title>
		<link rel="alternate" type="text/html" href="http://wiki.sommarmatte.se/wikis/2009/bridgecoursemechanics/index.php?title=20._Video&amp;diff=1776&amp;oldid=prev"/>
				<updated>2011-04-27T15:07:57Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;

			&lt;table style=&quot;background-color: white; color:black;&quot;&gt;
			&lt;col class='diff-marker' /&gt;
			&lt;col class='diff-content' /&gt;
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			&lt;col class='diff-content' /&gt;
			&lt;tr&gt;
				&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;←Older revision&lt;/td&gt;
				&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 15:07, 27 April 2011&lt;/td&gt;
			&lt;/tr&gt;
		&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 32:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 32:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|- &lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|- &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| '''&lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Discs &lt;/del&gt;of &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Different Masses on &lt;/del&gt;the Turn Table '''&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| '''&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Finding the Coefficient &lt;/ins&gt;of &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Friction between the coin and &lt;/ins&gt;the Turn Table '''&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|valign=&amp;quot;top&amp;quot;| &lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|valign=&amp;quot;top&amp;quot;| &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|- &lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|- &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| [[Image:&lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;friction2&lt;/del&gt;.jpg]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| [[Image:&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;coin&lt;/ins&gt;.jpg]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|valign=&amp;quot;top&amp;quot;| &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Here &lt;/del&gt;the coefficient of friction between &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;a block &lt;/del&gt;and &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;a plane is determined and then tested by using &lt;/del&gt;the &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;angle of friction&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|valign=&amp;quot;top&amp;quot;| &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Use the data that you can gain from the experiment shown in the clip to calculate &lt;/ins&gt;the coefficient of friction between &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;the disc &lt;/ins&gt;and the &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;turntable&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;http://www.youtube.com/watch?v=z2q_Wymu0W4&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;nbsp;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;http://www.youtube.com/watch?v=gsXwqY6PGzY&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Ian</name></author>	</entry>

	<entry>
		<id>http://wiki.sommarmatte.se/wikis/2009/bridgecoursemechanics/index.php?title=20._Video&amp;diff=1774&amp;oldid=prev</id>
		<title>Ian at 15:02, 27 April 2011</title>
		<link rel="alternate" type="text/html" href="http://wiki.sommarmatte.se/wikis/2009/bridgecoursemechanics/index.php?title=20._Video&amp;diff=1774&amp;oldid=prev"/>
				<updated>2011-04-27T15:02:39Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;

			&lt;table style=&quot;background-color: white; color:black;&quot;&gt;
			&lt;col class='diff-marker' /&gt;
			&lt;col class='diff-content' /&gt;
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			&lt;col class='diff-content' /&gt;
			&lt;tr&gt;
				&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;←Older revision&lt;/td&gt;
				&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 15:02, 27 April 2011&lt;/td&gt;
			&lt;/tr&gt;
		&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 21:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 21:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|- &lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|- &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| '''&lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Angle &lt;/del&gt;of &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Friction Experiment&lt;/del&gt;'''&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| '''&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Discs &lt;/ins&gt;of &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Different Masses on the Turn Table&lt;/ins&gt;'''&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|valign=&amp;quot;top&amp;quot;|&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|valign=&amp;quot;top&amp;quot;|&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|- &lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|- &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| [[Image:&lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;friction1&lt;/del&gt;.jpg]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| [[Image:&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Discs2&lt;/ins&gt;.jpg]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|valign=&amp;quot;top&amp;quot;| &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;The coefficient &lt;/del&gt;of &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;friction for a body on an inclined plane can be found by looking for the angle &lt;/del&gt;at &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;which &lt;/del&gt;the &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;body is on &lt;/del&gt;the &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;point &lt;/del&gt;of &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;sliding down &lt;/del&gt;the &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;slope. This experiment shows how &lt;/del&gt;the &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;coefficient of friction between a calculator and a wooden plane can be found&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|valign=&amp;quot;top&amp;quot;| &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;If two discs &lt;/ins&gt;of &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;different masses are placed &lt;/ins&gt;at the &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;same distance from &lt;/ins&gt;the &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;centre &lt;/ins&gt;of the &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;turntable, why if either will begin to slide first? Make your prediction before watching &lt;/ins&gt;the &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;clip&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;nbsp;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;nbsp;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;http://www.youtube.com/watch?v=S9I2uaHKgD4&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;http://www.youtube.com/watch?v=3V6EhZY_dKo&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;nbsp;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|- &lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|- &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| '''&lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Angle &lt;/del&gt;of &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Friction Second Experiment &lt;/del&gt;'''&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| '''&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Discs &lt;/ins&gt;of &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Different Masses on the Turn Table &lt;/ins&gt;'''&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|valign=&amp;quot;top&amp;quot;| &lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|valign=&amp;quot;top&amp;quot;| &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|- &lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|- &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Ian</name></author>	</entry>

	<entry>
		<id>http://wiki.sommarmatte.se/wikis/2009/bridgecoursemechanics/index.php?title=20._Video&amp;diff=1772&amp;oldid=prev</id>
		<title>Ian at 14:58, 27 April 2011</title>
		<link rel="alternate" type="text/html" href="http://wiki.sommarmatte.se/wikis/2009/bridgecoursemechanics/index.php?title=20._Video&amp;diff=1772&amp;oldid=prev"/>
				<updated>2011-04-27T14:58:10Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;

			&lt;table style=&quot;background-color: white; color:black;&quot;&gt;
			&lt;col class='diff-marker' /&gt;
			&lt;col class='diff-content' /&gt;
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			&lt;col class='diff-content' /&gt;
			&lt;tr&gt;
				&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;←Older revision&lt;/td&gt;
				&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 14:58, 27 April 2011&lt;/td&gt;
			&lt;/tr&gt;
		&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 10:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 10:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;{| width=&amp;quot;500px&amp;quot; cellspacing=&amp;quot;10px&amp;quot; align=&amp;quot;center&amp;quot; border=&amp;quot;1&amp;quot;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;{| width=&amp;quot;500px&amp;quot; cellspacing=&amp;quot;10px&amp;quot; align=&amp;quot;center&amp;quot; border=&amp;quot;1&amp;quot;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| '''&lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Finding Unknown Masses&lt;/del&gt;'''&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| '''&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Discs on a Turn Table&lt;/ins&gt;'''&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| valign=&amp;quot;top&amp;quot;| &lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| valign=&amp;quot;top&amp;quot;| &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|- &lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;|- &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| [[Image:&lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;masses&lt;/del&gt;.JPG]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| [[Image:&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Discs1&lt;/ins&gt;.JPG]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| valign=&amp;quot;top&amp;quot;| &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;In this experiment the masses of two rocks can be determined by using the idea of forces in equilibrium&lt;/del&gt;. The &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;data is collected and then you are required &lt;/del&gt;to &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;do &lt;/del&gt;the &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;calculations &lt;/del&gt;to &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;find &lt;/del&gt;the &lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;masses&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;| valign=&amp;quot;top&amp;quot;| &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Here four discs are placed on a turntable&lt;/ins&gt;. The &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;turntable starts &lt;/ins&gt;to &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;rotate and its angular speed is gradually increased. Explain why &lt;/ins&gt;the &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;discs begin &lt;/ins&gt;to &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;slide in the order shown in &lt;/ins&gt;the &lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;clip&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;-&lt;/td&gt;&lt;td style=&quot;background: #ffa; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;http://www.youtube.com/watch?v=&lt;del style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;uUYJD2EAcdw&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;http://www.youtube.com/watch?v=&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;Oa9SD2sqgXQ&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Ian</name></author>	</entry>

	<entry>
		<id>http://wiki.sommarmatte.se/wikis/2009/bridgecoursemechanics/index.php?title=20._Video&amp;diff=1754&amp;oldid=prev</id>
		<title>Ian: New page: __NOTOC__ {| border=&quot;0&quot; cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; height=&quot;30&quot; width=&quot;100%&quot; | style=&quot;border-bottom:1px solid #797979&quot; width=&quot;5px&quot; | &amp;nbsp; {{Not selected tab|[[20. Circular Motion|The...</title>
		<link rel="alternate" type="text/html" href="http://wiki.sommarmatte.se/wikis/2009/bridgecoursemechanics/index.php?title=20._Video&amp;diff=1754&amp;oldid=prev"/>
				<updated>2011-04-27T13:50:10Z</updated>
		
		<summary type="html">&lt;p&gt;New page: __NOTOC__ {| border=&amp;quot;0&amp;quot; cellspacing=&amp;quot;0&amp;quot; cellpadding=&amp;quot;0&amp;quot; height=&amp;quot;30&amp;quot; width=&amp;quot;100%&amp;quot; | style=&amp;quot;border-bottom:1px solid #797979&amp;quot; width=&amp;quot;5px&amp;quot; | &amp;amp;nbsp; {{Not selected tab|[[20. Circular Motion|The...&lt;/p&gt;
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| style=&amp;quot;border-bottom:1px solid #797979&amp;quot; width=&amp;quot;5px&amp;quot; | &amp;amp;nbsp;&lt;br /&gt;
{{Not selected tab|[[20. Circular Motion|Theory]]}}&lt;br /&gt;
{{Not selected tab|[[20. Exercises|Exercises]]}}&lt;br /&gt;
{{Selected tab|[[20. Video|Video]]}}&lt;br /&gt;
| style=&amp;quot;border-bottom:1px solid #797979&amp;quot;  width=&amp;quot;100%&amp;quot;| &amp;amp;nbsp;&lt;br /&gt;
|}&lt;br /&gt;
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{| width=&amp;quot;500px&amp;quot; cellspacing=&amp;quot;10px&amp;quot; align=&amp;quot;center&amp;quot; border=&amp;quot;1&amp;quot;&lt;br /&gt;
| '''Finding Unknown Masses'''&lt;br /&gt;
| valign=&amp;quot;top&amp;quot;| &lt;br /&gt;
&lt;br /&gt;
|- &lt;br /&gt;
| [[Image:masses.JPG]]&lt;br /&gt;
| valign=&amp;quot;top&amp;quot;| In this experiment the masses of two rocks can be determined by using the idea of forces in equilibrium. The data is collected and then you are required to do the calculations to find the masses.&lt;br /&gt;
&lt;br /&gt;
http://www.youtube.com/watch?v=uUYJD2EAcdw&lt;br /&gt;
&lt;br /&gt;
 &lt;br /&gt;
|- &lt;br /&gt;
| '''Angle of Friction Experiment'''&lt;br /&gt;
|valign=&amp;quot;top&amp;quot;|&lt;br /&gt;
|- &lt;br /&gt;
| [[Image:friction1.jpg]]&lt;br /&gt;
|valign=&amp;quot;top&amp;quot;| The coefficient of friction for a body on an inclined plane can be found by looking for the angle at which the body is on the point of sliding down the slope. This experiment shows how the coefficient of friction between a calculator and a wooden plane can be found.&lt;br /&gt;
&lt;br /&gt;
http://www.youtube.com/watch?v=3V6EhZY_dKo&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
|- &lt;br /&gt;
| '''Angle of Friction Second Experiment '''&lt;br /&gt;
|valign=&amp;quot;top&amp;quot;| &lt;br /&gt;
|- &lt;br /&gt;
| [[Image:friction2.jpg]]&lt;br /&gt;
|valign=&amp;quot;top&amp;quot;| Here the coefficient of friction between a block and a plane is determined and then tested by using the angle of friction.&lt;br /&gt;
&lt;br /&gt;
http://www.youtube.com/watch?v=z2q_Wymu0W4&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
|}&lt;/div&gt;</summary>
		<author><name>Ian</name></author>	</entry>

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