Same chapter3 marksDifficulty: Medium
State the principle of conservation of energy and give one example of its application.
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1 markDifficulty: Medium
A coolie carrying a load walks horizontally along a platform. The work done by him against gravity is:
- alarge and positive
- blarge and negative
- czero
- dequal to the weight of the load
Original Khojo Papers practice question — not from a past board paper.
Answer
zero
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The force of gravity acts vertically and the displacement is horizontal, so the angle between them is 90° and the work is zero.
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