Gujarat BoardEnglish MediumSTD 9ScienceModel Paper 22 Marks
Question
A body moves along a circular path. How much work is done in doing so? Explain.
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Answer
In case of a body moving along a circular path, the force (centripetal) is always along the radius while displacement is tangential. Hence work done $W=\Gamma s \cos 90^{\circ}-0$ as angle between E and sis $90^{\circ}$.
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