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Question

A block of mass 250kg falling at the rate of 10m in 5s is used to lift a load of 5000N by 2m in the same time. Calculate i) WO ii) PO iii) WI and iv) energy dissipated


A

i) 1000 J ; ii) 500 W; iii) 2500 J; iv) 7500 J

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B

i) 10000 J ; ii) 2000 W; iii) 25000 J; iv) 15000 J

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C

i) 50000 J ; ii) 10000 W; iii) 5000 J; iv) 15000 J

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D

i) 100 J ; ii) 500 W; iii) 2000 J; ; iv) 8000 J

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E

i) 10000 J ; ii) 5000 W; iii) 1000 J; iv) 1500 J

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Solution

The correct option is B

i) 10000 J ; ii) 2000 W; iii) 25000 J; iv) 15000 J



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