3. Exercises - Revision history

Ian at 17:02, 10 April 2011

2011-04-10T17:02:24Z

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Ian at 11:10, 27 March 2011

2011-03-27T11:10:09Z

←Older revision		Revision as of 11:10, 27 March 2011
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	===Exercise 3.8===		===Exercise 3.8===
	<div class="ovning">		<div class="ovning">
-	Three boxes have masses of 5 kg, 12 kg and 10 kg. They are stacked on a horizontal surface with the 12 kg box at the bottom. Draw a diagram to show the forces acting on ~~this~~ box and calculate the magnitude of each of these forces.	+	Three boxes have masses of 5 kg, 12 kg and 10 kg. They are stacked on a horizontal surface with the 12 kg box at the bottom. Draw a diagram to show the forces acting on the 12kg box and calculate the magnitude of each of these forces.

	</div>{{#NAVCONTENT:Diagram\|Diagram3.8\|Answer\|Answer 3.8\|Solution\|Solution 3.8}}		</div>{{#NAVCONTENT:Diagram\|Diagram3.8\|Answer\|Answer 3.8\|Solution\|Solution 3.8}}

Ian at 10:34, 22 March 2010

2010-03-22T10:34:09Z

←Older revision		Revision as of 10:34, 22 March 2010
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-	</div>{{#NAVCONTENT:Answer a\|Answer 3.13a\|Answer b\|Answer 3.13b\|Answer c\|Answer 3.13c\|Solution b~~\|Solution 3.13b\|Solution~~ c\|Solution 3.~~13c~~}}	+	</div>{{#NAVCONTENT:Answer a\|Answer 3.13a\|Answer b\|Answer 3.13b\|Answer c\|Answer 3.13c\|Solution b and c\|Solution 3.13bc}}

Ian at 16:05, 21 March 2010

2010-03-21T16:05:49Z

←Older revision		Revision as of 16:05, 21 March 2010
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-	</div>{{#NAVCONTENT:Answer a\|Answer 3.12a\|Answer b\|Answer 3.12b\|Answer c\|Answer 3.12c}}	+	</div>{{#NAVCONTENT:Answer a\|Answer 3.12a\|Answer b\|Answer 3.12b\|Answer c\|Answer 3.12c\|Solution \|Solution }}

Ian at 09:16, 17 March 2010

2010-03-17T09:16:45Z

←Older revision		Revision as of 09:16, 17 March 2010
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	===Exercise 3.2===		===Exercise 3.2===
	<div class="ovning">		<div class="ovning">
-	A ~~sphere,~~ of mass 20 kg, is ~~supported by~~ a ~~single vertical cable~~. ~~Find~~ the tension in the ~~cable~~.	+	A particle of mass 2.5 kg is hanging, in equilibrium from a spring. Calculate the tension in the spring.

	</div>{{#NAVCONTENT:Answer\|Answer 3.2\|Solution\|Solution 3.2}}		</div>{{#NAVCONTENT:Answer\|Answer 3.2\|Solution\|Solution 3.2}}

Ian at 11:59, 8 March 2010

2010-03-08T11:59:16Z

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Ian at 11:52, 8 March 2010

2010-03-08T11:52:02Z

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-	{{Not selected tab\|[[3. Other types of force \|Theory]]}}	+	{{Not selected tab\|[[3. Other types of force\|Theory]]}}
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Ian at 14:34, 7 September 2009

2009-09-07T14:34:17Z

←Older revision		Revision as of 14:34, 7 September 2009
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	</div>{{#NAVCONTENT:Answer a\|Answer 3.12a\|Answer b\|Answer 3.12b\|Answer c\|Answer 3.12c}}		</div>{{#NAVCONTENT:Answer a\|Answer 3.12a\|Answer b\|Answer 3.12b\|Answer c\|Answer 3.12c}}
		+
		+
		+	===Exercise 3.13===
		+	<div class="ovning">
		+
		+	A tank has mass 800 kg. It is pulled along a horizontal surface by a rope attached to a tractor. The coefficient of friction between the tank and the ground is 0.6. The rope exerts a horizontal force of magnitude 5000 N on the tank.
		+
		+	a) Draw a diagram to show the forces acting on the tank.
		+
		+	b) Find the magnitude of the friction force acting on the tank.
		+
		+	c) Find the magnitude of the resultant force on the tank.
		+
		+
		+	</div>{{#NAVCONTENT:Answer a\|Answer 3.13a\|Answer b\|Answer 3.13b\|Answer c\|Answer 3.13c\|Solution b\|Solution 3.13b\|Solution c\|Solution 3.13c}}

Ian at 14:29, 7 September 2009

2009-09-07T14:29:54Z

←Older revision		Revision as of 14:29, 7 September 2009
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	</div>{{#NAVCONTENT:Answer a\|Answer 3.11a\|Answer b\|Answer 3.11b\|Answer c\|Answer 3.11c\|Solution a\|Solution 3.11a\|Solution b\|Solution 3.11b\|Solution c\|Solution 3.11c}}		</div>{{#NAVCONTENT:Answer a\|Answer 3.11a\|Answer b\|Answer 3.11b\|Answer c\|Answer 3.11c\|Solution a\|Solution 3.11a\|Solution b\|Solution 3.11b\|Solution c\|Solution 3.11c}}
		+
		+
		+	===Exercise 3.12===
		+	<div class="ovning">
		+
		+	A sledge has mass 12 kg. It rests on a horizontal surface. The coefficient of friction between the sledge and the ground is 0.3. A horizontal force of P N acts on the sledge.
		+	What happens to the sledge if;
		+
		+
		+	a) P = 40 N,
		+
		+	b) P = 30 N,
		+
		+	c) P = 35.28 N ?
		+
		+
		+	</div>{{#NAVCONTENT:Answer a\|Answer 3.12a\|Answer b\|Answer 3.12b\|Answer c\|Answer 3.12c}}

Ian at 14:25, 7 September 2009

2009-09-07T14:25:09Z

←Older revision		Revision as of 14:25, 7 September 2009
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	</div>{{#NAVCONTENT:Answer a\|Answer 3.10a\|Answer b\|Answer 3.10b\|Answer c\|Answer 3.10c\|Answer d\|Answer 3.10d\|Solution a\|Solution 3.10a\|Solution b\|Solution 3.10b\|Solution c\|Solution 3.10c\|Solution d\|Solution 3.10d}}		</div>{{#NAVCONTENT:Answer a\|Answer 3.10a\|Answer b\|Answer 3.10b\|Answer c\|Answer 3.10c\|Answer d\|Answer 3.10d\|Solution a\|Solution 3.10a\|Solution b\|Solution 3.10b\|Solution c\|Solution 3.10c\|Solution d\|Solution 3.10d}}
		+
		+
		+	===Exercise 3.11===
		+	<div class="ovning">
		+
		+	The diagram shows a system, in which two weights are attached by light strings to a block that is at rest on a rough horizontal surface.
		+
		+
		+	[[Image:E3.11.GIF]]
		+
		+	a) Find the tension in the right hand string.
		+
		+	b) Find the tension in the left hand string.
		+
		+	c) Find an inequality that the coefficient of friction between the block and the surface must satisfy.
		+
		+	</div>{{#NAVCONTENT:Answer a\|Answer 3.11a\|Answer b\|Answer 3.11b\|Answer c\|Answer 3.11c\|Solution a\|Solution 3.11a\|Solution b\|Solution 3.11b\|Solution c\|Solution 3.11c}}

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