why does essay become warm when it is used to cut a log of wood
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due to decrease in the energy of the Bob,its amplitude of oscillation decrease with time and eventually the Bob come to rest .
ii) when saw is used to cut log of wood .work is done against the force of friction between the saw and log . therefore the work done (mechanical energy)is converted into heat energy
ii) when saw is used to cut log of wood .work is done against the force of friction between the saw and log . therefore the work done (mechanical energy)is converted into heat energy
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