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Q7 (c)  State if each of the following statements is true or false. Give reasons for your answer.  Work done in the motion of a body over a closed loop is zero for every force in nature.

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False:-   This is true only for conservative forces e.g. gravitational force.  For e.g in case of frictional force (non-conservative force), the work done in a closed-loop cannot be zero as energy is wasted throughout.

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Devendra Khairwa

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