Work done by the centripetal force on a body moving in circle is zero because _.
Correct answer: C. The body moves at right angle to F
- A. The body moves parallel to F
- B. The body moves opposite to F
- C. The body moves at right angle to F
- D. Centripetal and centrifugal balance each other
Explanation
For work to be done by a force, an object must move in the direction of the force. In a uniform circular motion, the object always moves perpendicular to the Centripetal Force, F, therefore no work is done. Hence, Option C is correct.
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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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