A girl running along a circular …
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Yogita Ingle 7 years, 5 months ago
After 1 complete rotation ,the displacement is 0, so no work is done by the girl .
Since, work = force X displacement .
Work done is zero in the following cases :
1. If F = 0
2. If s =0
3. If F s cos 90 degrees. (If F and s are perpendicular )
2Thank You