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Suppose a body spends its mechanical ene...

Suppose a body spends its mechanical energy to overcome friction. will it be a reversible process ?

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When a body spends its mechanical energy to overcome friction in moving from one position to another, the energy is dissipated as heat. Now if the body is allowed to go round its reverse path, the previously spend energy is not recovered, of cource, further energy is spend in reverse path. Hence the process is not reversible
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