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Physics 11 Online
OpenStudy (anonymous):

Discuss the differences between work and energy and why energy is conserved while work is not.

OpenStudy (anonymous):

Firstly work is not a form of energy .. it is the measurement of the amount of energy that is transformed. If a mechanical device is less than 100% efficient the useful work output is less than the work input .. just as the useful energy output is less than the input. The 'missing',wasted energy (heat/sound) is created by the 'missing' work that has been done during the transfer. If energy is conserved .. then it's measurement (work) is also conserved.

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