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Physics CBSE Live product
Class 9
Work and energy
Introduction to work and work done by objects
9.
Work done by different objects
Question:
3
m.
Look at the activities listed below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
1
.
An engine is pulling a train.
No work is done by the engine
Work is done by the engine
2
.
A crane is lifting construction materials.
No work is done
Work is done
3
.
A sailboat is moving due to wind energy.
No work is done
Work is done
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