The frictional force when a bag of rice is pushed in a wheelbarrow is 50N. A Labourer pushes this load for a distance of 25m in 20.4s. Calculate the rate at which he works.
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Explanation:
power is rate of work
p=w/t
p=FS/t
p=50×25/20.4
p=12500/204
p=61.27
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