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Question
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A donkey is carrying a load on its back.
Short Answer
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Solution
- While carrying a load, the donkey has to apply a force in the upward direction. But the displacement of the load is in the forward direction.
- Since displacement is perpendicular to force, the work done is zero.
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Chapter 10: Work and Energy - Exercises [Page 124]
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