Watch Winding
Posted in Watches on 04/16/2010 11:32 am by adminPhysics Question: Suppose 1 joule of work were expended in winding a 30-gram steel watch.?
If the watch were wrapped in a theoretically perfect insulator, how much warmer would the watch be by the time it had run down? One joule of work = .24 cal, and the specific heat of steel is .1 cal/gm-deg
C*M*dT = dW → dT = dW/(C*M) = .24/(.1*30) = .08 C°
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