A body moves along a circular path of radius 10 m and the coefficient of friction is 0 . 5 . What should be its angular speed in r a d s - 1 , if it is not to slip from the surface? ( g = 9.8 m s - 2 )

Question

A body moves along a circular path of radius 10 m and the coefficient of friction is 0 . 5 . What should be its angular speed in r a d s - 1 , if it is not to slip from the surface? ( g = 9.8 m s - 2 ), 5, 10, 0.1, 0.7

MARKS App · Accepted Answer

For body to move on circular path. Frictional force provides the necessary centripetal force, i e , frictional force = centripetal force o r μ m g = m v 0 2 r = m r ω 2 o r μ g = r ω 2 ∴ 0.5 × 9.8 = 10 ω 2 o r ω = 0.7 r a d s - 1

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