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Vivek Balakrishnan Grade: 11
        

A stationary body is lowered on to a massive platform moving horizontally with a speed of 4 ms^-1. The distance the body slides relative to the platform, if the coefficient of friction is 0.2, is(g=10ms^-2)


a)16m     b)8m    c)4m    d)2m

6 years ago

Answers : (1)

vikas askiitian expert
510 Points
										

applying v2 = u2 + 2as


 finally particle comes to rest over the platform due to friction..


(retardation)a = (cofficient of friction)g =0.2*10=2m/s2


   u2 = 2(2)s


    s = u2/4 = 4m

6 years ago
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