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प्रश्न
Define the term ‘work input’ and ‘work output’ in relation to a machine.
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उत्तर
Work input is work done on a machine equal to the effort force times the distance through which the force is applied.
Work output is work that is done by a machine and equals resistance force times the distance through which the force is applied.
For an ideal machine, the work output is equal to the work input, i.e., the efficiency.
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