Question

a body of mass 1 kg is placed on a rough inclined plane of inclination 30 the friction force acting on it when u=0.9
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Answer 1

Answer:

Given , mass of body = 1 kg

inclination , 0 = 30°

u = 0.9

Let frictional force = f

As the black is only placed and

is not experiencing any acceleration . f ≥ mgsino

Also ,.

f = umgcoso

f = 0.9 × 1 × 10 × cos 30°

f = 9 × √3/2