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A machine with velocity ratio of 5 was used to raise a load of 1.2kg mass through a height of 10m .If the work done to raise the load is 800J . Find the useful work output , efficiency of the machine
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Answered by
bobpursley
The work done was mgh or 1.2*9.8*10=118 joules
efficiency=118/800
efficiency=118/800
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