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CBSE Class 9 Answered

Calculate the work done by a person in lifting a load of 20 kg from the ground and placing it on a 1m high table.
Asked by rajneesh kumar | 05 Dec, 2013, 08:11: PM
answered-by-expert Expert Answer
Given that,
 
m = 20 kg
h = 1 m
 
Work done against gravitational force,
 
W = mgh
    = 20 x 9.8 x 1
    = 196 J
Answered by Komal Parmar | 06 Dec, 2013, 07:52: AM

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