Question

A particle of mass 5kg is pulled along a rough horizontal plane by a horizontal force of
15N.The coefficient of friction between the particle and the plane is 0.2.Find the acceleration of the particle.

Answer 1

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 ANSWER

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ince the particle is sliding down with a constant velocity therefore the net force on the particle is zero. The frictional force (acting up the plane ) is balanced by the component mg sin 30.

f = mg sin 30 = 5x10x0.5 = 25 N

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