3. Exercises
From Mechanics
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| + | ===Exercise 3.5=== | ||
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| + | Two books are placed, one on top of each other on a horizontal surface. The top book has mass 1.2 kg and the lower book has mass 1.8 kg. | ||
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| + | a) Draw diagrams to show the forces on each book. | ||
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| + | b) Calculate the magnitude of the normal reaction force acting on the top book. | ||
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| + | c) Calculate the magnitude of the normal reaction forces acting on the bottom book. | ||
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| + | </div>{{#NAVCONTENT:Answer|Answer 2.4|Solution a|Solution 3.5a|Solution b|Solution 3.5b|Solution c|Solution 3.5c}} | ||
Revision as of 15:11, 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.
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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
The diagram shows two masses and two strings that are suspended from a fixed point. Find the tension in each string.
Exercise 3.4
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.
Exercise 3.5
Two books are placed, one on top of each other on a horizontal surface. The top book has mass 1.2 kg and the lower book has mass 1.8 kg.
a) Draw diagrams to show the forces on each book.
b) Calculate the magnitude of the normal reaction force acting on the top book.
c) Calculate the magnitude of the normal reaction forces acting on the bottom book.
