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ICSE Class 10 Answered

Derivation of w=mgh

Asked by sanjeevrao.2704 | 04 Jun, 2020, 08:43: AM
Expert Answer
If a body of mass m moves down from a height h, the forceof gravity or weight acts on the body through a displacement h.
 Thus, work done by the force of gravity is 
W= Force × displacement
=Weight × height
= mg × h
Thus, work done by force of gravity, W =mgh 
 
Similarly, if the body is thrown up to a height h, the work done by gravity is
W = - mgh
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