Work done by a central force is
Correct answer: C. Zero
- A. Maximum
- B. Minimum
- C. Zero
- D. Negative
Explanation
The work done by a central force is zero because the force acts perpendicular to the displacement of the object it acts upon. In other words, the dot product of force and displacement is zero, so the work done is zero.
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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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