1. Video - Revision history

Ian at 17:03, 9 April 2011

2011-04-09T17:03:15Z

←Older revision		Revision as of 17:03, 9 April 2011
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	\|-		\|-
	\| [[Image:cans1.jpg]]		\| [[Image:cans1.jpg]]
-	\|valign="top"\| An interesting experiment involves the comparison of the motion of two tin cans when they roll and slide. This is an experiment that you could carry out yourself, of you could watch at the link below.	+	\|valign="top"\| An interesting experiment involves the comparison of the motion of two tin cans when they roll and slide. This is an experiment that you could carry out yourself, or you could watch at the link below.

	http://www.youtube.com/watch?v=Vx6he1pDtes		http://www.youtube.com/watch?v=Vx6he1pDtes

Ian at 17:00, 9 April 2011

2011-04-09T17:00:27Z

←Older revision		Revision as of 17:00, 9 April 2011
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	\|-		\|-
	\| [[Image:fig drum2.jpg]]		\| [[Image:fig drum2.jpg]]
-	\|valign="top"\| f you are unable to do the drum experiment for yourself, try watching in on the link below.	+	\|valign="top"\| If you are unable to do the drum experiment for yourself, try watching in on the link below.

	http://www.youtube.com/watch?v=O5vvSJjqTOU		http://www.youtube.com/watch?v=O5vvSJjqTOU
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	http://www.youtube.com/watch?v=HGuIFPxuwrU		http://www.youtube.com/watch?v=HGuIFPxuwrU

-	\|-
-	\| [[Image:fig i.GIF]]
-	\|valign="top"\| In the first case the resultant force is upwards. As the parachutist is also moving downwards, he slows down.
-
-	In the second case the resultant force is zero and the parachutist moves with a constant speed.
-
-	\|-
-	\| [[Image:fig k.GIF]]
-	\|valign="top"\| The resultant force is always downwards.
-
-	If the resultant force were zero at the highest point, the ball would stay there!!
-
-	\|-
-	\| [[Image:fig m.GIF]]
-	\|valign="top"\| No, the motion is changing from downwards to upwards.
-
-	The resultant force is upwards, for almost all of the time that the ball is in contact with the table.
-
-	\|-
-	\| [[Image:fig n.GIF]]
-	\|valign="top"\| The direction of the motion is always changing, so the forces are not in equilibrium.
-	\|-
-	\| [[Image:fig p.GIF]]
-	\|valign="top"\|
-	\|-
-	\| [[Image:fig q.GIF]]
-	\|valign="top"\| [[Image:fig r.GIF]]
-	\|-
-	\| [[Image:fig s.GIF]]
-	\|valign="top"\| [[Image:fig t.GIF]]
-	\|-
-	\| [[Image:fig u.GIF]]
-	\|valign="top"\| [[Image:fig v.GIF]]
	\|}		\|}

Ian at 16:58, 9 April 2011

2011-04-09T16:58:10Z

←Older revision		Revision as of 16:58, 9 April 2011
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	\|-		\|-
	\| [[Image:fig drum2.jpg]]		\| [[Image:fig drum2.jpg]]
-	\|valign="top"\| ~~Exploring~~ the ~~effects of gravity~~ on ~~objects can help create a definition of a force~~.	+	\|valign="top"\| f you are unable to do the drum experiment for yourself, try watching in on the link below.
		+
		+	http://www.youtube.com/watch?v=O5vvSJjqTOU
		+
	\|-		\|-
	\| '''The Rolling Cans'''		\| '''The Rolling Cans'''
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	\|-		\|-
	\| [[Image:cans1.jpg]]		\| [[Image:cans1.jpg]]
-	\|valign="top"\| ~~A force is something that causes a change to~~ the motion of ~~a body~~.	+	\|valign="top"\| An interesting experiment involves the comparison of the motion of two tin cans when they roll and slide. This is an experiment that you could carry out yourself, of you could watch at the link below.
		+
		+	http://www.youtube.com/watch?v=Vx6he1pDtes
		+
	\|-		\|-
	\| '''Brainiac Eggsperiment'''		\| '''Brainiac Eggsperiment'''
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	\|-		\|-
	\| [[Image:brainiac.jpg]]		\| [[Image:brainiac.jpg]]
-	\|valign="top"\| ~~In the first car the resultant force~~ is ~~in the direction~~ of motion ~~and the car gains speed~~.	+	\|valign="top"\| This is a great experiment that demonstrates Newton’s First law of motion. Watch and enjoy at the link below.
-		+
-	~~In the second case the resultant force is zero~~ and the ~~car travels at a constant speed~~.	+

-	~~In the third case the resultant force is backwards and the car slows down~~.	+	http://www.youtube.com/watch?v=HGuIFPxuwrU

	\|-		\|-

Ian at 16:55, 9 April 2011

2011-04-09T16:55:48Z

←Older revision		Revision as of 16:55, 9 April 2011
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	\|valign="top"\| A force is something that causes a change to the motion of a body.		\|valign="top"\| A force is something that causes a change to the motion of a body.
	\|-		\|-
-	\| ~~[[Image:fig g.GIF]]~~	+	\| '''Brainiac Eggsperiment'''
-	\|valign="top"\| ~~Newton’s first two laws are based on an understanding of this idea of how a force changes motion.~~	+	\|valign="top"\|
	\|-		\|-
-	\| [[Image:~~fig h~~.~~GIF~~]]	+	\| [[Image:brainiac.jpg]]
	\|valign="top"\| In the first car the resultant force is in the direction of motion and the car gains speed.		\|valign="top"\| In the first car the resultant force is in the direction of motion and the car gains speed.

Ian at 16:37, 9 April 2011

2011-04-09T16:37:10Z

←Older revision		Revision as of 16:37, 9 April 2011
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	\|valign="top"\| Exploring the effects of gravity on objects can help create a definition of a force.		\|valign="top"\| Exploring the effects of gravity on objects can help create a definition of a force.
	\|-		\|-
-	\| ~~[[Image:fig e.GIF]]~~	+	\| '''The Rolling Cans'''
-	\|valign="top"\| ~~Gravity can change the motion of a ball in a number of ways.~~	+	\|valign="top"\|
	\|-		\|-
-	\| [[Image:~~fig f~~.~~GIF~~]]	+	\| [[Image:cans1.jpg]]
	\|valign="top"\| A force is something that causes a change to the motion of a body.		\|valign="top"\| A force is something that causes a change to the motion of a body.
	\|-		\|-

Ian at 15:38, 9 April 2011

2011-04-09T15:38:07Z

←Older revision		Revision as of 15:38, 9 April 2011
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	\|valign="top"\|		\|valign="top"\|
	\|-		\|-
-	\| [[Image:fig d.~~GIF~~]]	+	\| [[Image:fig drum2.jpg]]
	\|valign="top"\| Exploring the effects of gravity on objects can help create a definition of a force.		\|valign="top"\| Exploring the effects of gravity on objects can help create a definition of a force.
	\|-		\|-

Ian at 17:14, 8 April 2011

2011-04-08T17:14:31Z

←Older revision		Revision as of 17:14, 8 April 2011
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	\|-		\|-
-	\| ~~[[Image:fig c.GIF]]~~	+	\| '''The Drum Question'''
-	\|valign="top"\| ~~Write down a simple definition of a force in your own words.~~	+	\|valign="top"\|
	\|-		\|-
	\| [[Image:fig d.GIF]]		\| [[Image:fig d.GIF]]

Ian at 17:10, 8 April 2011

2011-04-08T17:10:12Z

←Older revision		Revision as of 17:10, 8 April 2011
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	{\| width="500px" cellspacing="10px" align="center" border="1"		{\| width="500px" cellspacing="10px" align="center" border="1"
		+	\| '''The Bike Question'''
		+	\| valign="top"\|
		+
		+	\|-
	\| [[Image:Bike.JPG]]		\| [[Image:Bike.JPG]]
	\| valign="top"\| If you are unable to do the bike experiment for yourself, try watching in on the link below.		\| valign="top"\| If you are unable to do the bike experiment for yourself, try watching in on the link below.

	http://www.youtube.com/watch?v=DGTe5T4LIZY		http://www.youtube.com/watch?v=DGTe5T4LIZY
-
-	\|-
-	\| [[Image:fig b.GIF]]
-	\|valign="top"\| Modelling the drum as a particle can explain what happens if the string is horizontal, but not what happens if the string is vertical.
-
-	Beware of potential problems when modelling objects as particles.

	\|-		\|-

Ian at 17:04, 8 April 2011

2011-04-08T17:04:58Z

←Older revision		Revision as of 17:04, 8 April 2011
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	\|style="border-bottom:1px solid #797979" width="100%"\|		\|style="border-bottom:1px solid #797979" width="100%"\|
	\|}		\|}
		+

	{\| width="500px" cellspacing="10px" align="center" border="1"		{\| width="500px" cellspacing="10px" align="center" border="1"
-	\| [[Image:~~fig a~~.~~GIF~~]]	+	\| [[Image:Bike.JPG]]
-	\| valign="top"\| ~~Modelling~~ the bike ~~as a particle can provide an explanation~~ for the ~~fact that it moves backwards when pulled backwards~~.	+	\| valign="top"\| If you are unable to do the bike experiment for yourself, try watching in on the link below.
		+
		+	http://www.youtube.com/watch?v=DGTe5T4LIZY

-	Modelling an object as a particle is an idealisation (or abstraction) which can be useful in many cases.
	\|-		\|-
	\| [[Image:fig b.GIF]]		\| [[Image:fig b.GIF]]

Ian at 17:01, 8 April 2011

2011-04-08T17:01:27Z

←Older revision		Revision as of 17:01, 8 April 2011
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		+	__NOTOC__
		+	{\| border="0" cellspacing="0" cellpadding="0" height="30" width="100%"
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		+	{{Not selected tab\|[[1. What is a force?\|Introduction]]}}
		+	{{Selected tab\|[[1. Video\|Video]]}}
		+	\|style="border-bottom:1px solid #797979" width="100%"\|
		+	\|}

	{\| width="500px" cellspacing="10px" align="center" border="1"		{\| width="500px" cellspacing="10px" align="center" border="1"

←Older revision		Revision as of 17:01, 8 April 2011
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		+	__NOTOC__
		+	{\| border="0" cellspacing="0" cellpadding="0" height="30" width="100%"
		+	\| style="border-bottom:1px solid #797979" width="5px" \|
		+	{{Not selected tab\|[[1. What is a force?\|Introduction]]}}
		+	{{Selected tab\|[[1. Video\|Video]]}}
		+	\|style="border-bottom:1px solid #797979" width="100%"\|
		+	\|}

	{\| width="500px" cellspacing="10px" align="center" border="1"		{\| width="500px" cellspacing="10px" align="center" border="1"