A person weighing 70kgwt lifts a mass of 30kg to the roof of a building 10m high . if he takes 50 seconds to do so,then the power spent is: options A) 19.6W B) 196 C) 300W D) 50W. NOTE: it should be do like sum you don't select OK if know Answer means give option and do sum okk
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total work done is equals to 70 + 30 into G into displacement
so work done is equals 100 into 9.8 into 10
therefore work done is equals 100 into 9.8 into 10 completely divided by 50 equals to 196 watt
so work done is equals 100 into 9.8 into 10
therefore work done is equals 100 into 9.8 into 10 completely divided by 50 equals to 196 watt
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