A block of mass 3 kg is at rest on a rough inclined plane with angle o – InterviewSolution

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1.

A block of mass 3 kg is at rest on a rough inclined plane with angle of inclination 30° with horizontal. If .is 0.7, then the frictional force is –(a) 17.82 N (b) 1.81 N (c) 3.63 N (d) 2.1 N

Answer»

(a) 17.82 N

Frictional force = µmg cos θ = 0.7 x 3 x 9.8 cos 30° = 17.82 N

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