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Coefficient of kinetic friction and coefficient of static friction between two blocks is μk and μs respectively. In general

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Important Questions on Laws of Motion

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A block of mass m is stationary on a rough inclined plane making an angle θ with the horizontal. Find the contact force between block and the plane
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A block of mass 10 kg, moving with acceleration 2 m s-2 on horizontal rough surface is shown in figure

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The value of coefficient of kinetic friction is

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If angle of repose is ϕ, the coefficient of static friction between body and the plane is
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Which of the following is self adjusting in nature?
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A particle of mass 2 kg is moving in circular path with constant speed 20 m s-1. The magnitude of change in velocity when particle travels from A to P will be

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A particle is in uniform circular motion, then its velocity is perpendicular to
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If a particle is moving on a circular path with constant speed, then the angle between the direction of acceleration and its position vector w.r.t. centre of circle will be
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A particle is revolving in a circular path of radius 2 m with constant angular speed 4 rad s-1. The angular acceleration of particle is