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why work done by friction force in closed path is zero

why work done by friction force in closed path is zero

Grade:12

1 Answers

Vikas TU
14149 Points
7 years ago
work done by friction force in closed path is zero because the work done is obvious the change in internal energy and the friction fore is an internal force and hence for a closed path the change in internal energy is zero and hence work done by friction force is 0.

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