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CBSE Class 9 Answered

A 2-kg body is sliding up an inclined plane of inclination 30. find the work done by the force of gravity in moving the body through 1 m.
Asked by rajneesh kumar | 05 Dec, 2013, 08:16: PM
answered-by-expert Expert Answer
Given that,
 
m = 2 kg
θ = 30º
d = 1 m
 
Work done W = Fg d cos θ
                     = mg x d x cos θ
                     = 2 x 9.8 x 1 x cos 30º
                     = 19.6 x 0.866
                     = 16.97 J
                     
Answered by Komal Parmar | 06 Dec, 2013, 08:05: AM

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