Coolie is working on a railway platform with a load of 30 kg on his head how much work is done by the Coolie
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zero cause the angle between displacment and force is 90 degree
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work done by the coolie is 0 ..
because he is standing at 90'and may u read that the value of cosQ(when q is 90') is equal to 0 so whole thing will become 0 and no work done by coolie ...
we give him money for friction not for work
because he is standing at 90'and may u read that the value of cosQ(when q is 90') is equal to 0 so whole thing will become 0 and no work done by coolie ...
we give him money for friction not for work
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