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प्रश्न
A body is moved along a closed loop. Is the work done in moving the body necessarily zero? If not, state the condition under which work done over a closed path is always zero.
उत्तर
The work done by the moving body is zero when the conservative force is acting on the body during the motion. The work done by the moving body is non-zero when the non-conservative force is acting on the body.
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