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Friction

Why for rolli...

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Why for rolling f≤μ R and for sliding f≥μ R . Here f represents frictional force and bodies are on inclined plane making an angle θ with the ground

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Q. When a rolling body moves along an inclined plane, frictional force acts at the point of contact so as to either prevent the relative sliding or oppose the relative sliding. In the case of a rolling body when projected up or down along the inclined plane or spun with some angular speed and kept on the inclined plane, kinetic force of friction comes into play. If we release the body from rest and the angle of inclination

θ (θ_{0})

θ_{0}

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ω_{0} ↓

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The minimum coefficient of friction for which the sphere will have pure rolling after some time for

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