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Question
When a body is whirled in a circle, the work done on it is
When a body is whirled in a circle, the work done on it is
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Solution
The correct option is C Zero
When a body is whirled in a circle the work done is zero because in circular motion displacement is always perpendicular to the applied force. Also when a body moves along a circular path then the centripetal force acts along the radius of the circle and is at right angle to the motion of the body .Thus work done by centripetal force is zero when the radial position does not change.
When a body is whirled in a circle the work done is zero because in circular motion displacement is always perpendicular to the applied force. Also when a body moves along a circular path then the centripetal force acts along the radius of the circle and is at right angle to the motion of the body .Thus work done by centripetal force is zero when the radial position does not change.
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