A coolie is walking on a railway platform with a load of 30 kg on his head. How much work is done by coolie?

+1 vote
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asked Oct 17, 2017 in Physics by jisu zahaan (28,760 points) 26 375 814

A coolie is walking on a railway platform with a load of 30 kg on his head. How much work is done by coolie? 

1 Answer

+1 vote
answered Oct 17, 2017 by sforrest072 (157,439 points) 61 410 941
selected Feb 16, 2018 by sanjeev
 
Best answer

Coolie is carrying a load on his head so force exerted by it under gravity and displacement of the load makes 900 angle. 

W = 0               [ ∵ Force is perpendicular to the displacement ] 

Therefore, Work done by the coolie is zero.

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