3. Exercises

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===Exercise 3.4===
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<div class="ovning">
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[[Image:E3.4.GIF]]
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A plank leans against the back of a lorry, as shown in the diagram. Draw a diagram to show the forces acting on the plank.
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</div>{{#NAVCONTENT:Answer|Answer 3.4}}

Revision as of 14:57, 6 September 2009

       Theory          Exercises      


Exercise 3.1

A sphere, of mass 20 kg, is supported by a single vertical cable. Find the tension in the cable.


Exercise 3.2

A sphere, of mass 20 kg, is supported by a single vertical cable. Find the tension in the cable.


Exercise 3.3

Image:E3.3.GIF

The diagram shows two masses and two strings that are suspended from a fixed point. Find the tension in each string.



Exercise 3.4

Image:E3.4.GIF

A plank leans against the back of a lorry, as shown in the diagram. Draw a diagram to show the forces acting on the plank.