A small sphere with a radius r 152cm and a mass m 138g, Ask an Expert

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A small sphere , with a radius r = 1.52cm and a mass m = 13.8g rolls without slipping on the inside of a large fixed hemispherical bowel of radius R = 18.6cm and a vertical axis of symmetry. The small sphere starts at the top from rest . What normal force does it exert on the hemisphere at the bottom? Hint: first express its kinetic energy at the bottom in terms of its linear velocity there.

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