A pump is used to lift 1000kg water from a well of depth 80m in 10 seconds . Calculate(1)work done by pump (2)power at which pump works
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W = mgh = 1000 × 10 ×80
W= 8 × 10⁵ J
furthur P= W/t = 8 × 10⁵/10 = 8 × 10⁴ watt
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