A 10N force moves a body around a circular path of radius 50 cm. What is work done completing one revolution?
Correct answer: B. Zero
- A. 51 J
- B. Zero
- C. 31.42 J
- D. 500 J
Explanation
When the body completes one revolution, it comes back to its initial position, so its displacement becomes zero, and the work done will be zero as well.
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About Work
Work is done when a force produces displacement, with its value determined by the component of force along the displacement. The topic covers positive, negative and zero work, work by variable forces from force-displacement graphs, and the connection between net work and change in kinetic energy.
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