http://wiki.sommarmatte.se/wikis/2009/bridgecoursemechanics/index.php?action=history&feed=atom&title=Solution_14.6a 2026-05-28T01:59:39Z Revision history for this page on the wiki MediaWiki 1.11.1 http://wiki.sommarmatte.se/wikis/2009/bridgecoursemechanics/index.php?title=Solution_14.6a&diff=1230&oldid=prev 2010-09-13T15:48:02Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr> <td colspan='2' style="background-color: white; color:black;">←Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 15:48, 13 September 2010</td> </tr> <tr><td colspan="2" class="diff-lineno">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The diagram shows the forces acting on the ladder.</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The diagram shows the forces acting on the ladder.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td colspan="2">&nbsp;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>[[Image:14.6temp.gif]]</div></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Taking moments about the base of the ladder:</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Taking moments about the base of the ladder:</div></td></tr> </table>

Ian http://wiki.sommarmatte.se/wikis/2009/bridgecoursemechanics/index.php?title=Solution_14.6a&diff=1228&oldid=prev 2010-09-13T15:26:40Z

<p>New page: The diagram shows the forces acting on the ladder. Taking moments about the base of the ladder: &lt;math&gt;\begin{align} &amp; 5\sin 70{}^\circ \times S=2\textrm{.}5\cos 70{}^\circ \times 245 \\...</p> <p><b>New page</b></p><div>The diagram shows the forces acting on the ladder.<br /> <br /> <br /> Taking moments about the base of the ladder:<br /> <br /> &lt;math&gt;\begin{align}<br /> &amp; 5\sin 70{}^\circ \times S=2\textrm{.}5\cos 70{}^\circ \times 245 \\ <br /> &amp; S=\frac{2\textrm{.}5\cos 70{}^\circ \times 245}{5\sin 70{}^\circ }=44\textrm{.}59\text{ N} \\ <br /> \end{align}&lt;/math&gt;<br /> <br /> Considering the horizontal forces <br /> &lt;math&gt;F=S=44\textrm{.}59\text{ N}&lt;/math&gt;<br /> <br /> Considering the vertical forces <br /> &lt;math&gt;R=245\text{ N}&lt;/math&gt;</div>

Ian