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  3. A particle is kept at rest at the top of a sphere of diameter 42 m. When disturbed slightly, it slides down. At what height h from the bottom, the par

. A particle is kept at rest at the top of a sphere of diameter 42 m. When disturbed slightly, it slides down. At what height h from the bottom, the par

A particle is kept at rest at the top of a sphere of diameter 42 m. When disturbed slightly, it slides down. At what height h from the bottom, the particle will leave the sphere

(a) 14 m          (b) 16 m          (c) 35 m          (d) 70 m

Best Answer

Particle leave the sphere when normal reaction will be zero.Thus velocity of the particle, when it leave the

 

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