MCQ
What is work done in holding a body of mass $20\ kg$ at a height of $2m$ above the ground? $(g = 10m/ s^2)$
- A$40D$
- B$400J$
- C$10D$
- ✓Zero
✓
Answer
Correct option: D.
Zero
A body of mass $20\ kg$ is held at a height of $2m$ above the ground means there is no displacement because of which there is no change in its potential energy.
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