A coolie of 40 Kg weight carries 20 Kg salt and climbs up 20 steps of 20 centimeter each in 2 minutes .Calculate the work done by him and his power
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Answer:
work done =force * displacement
work dine =60*10*4
work done =2400 joules
power = work/time
power =MGH/ time
power= 6*10*4/120
power = 2400/ 120
power = 20 watt
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