# Rotational Kinematics & Energy

Anonymous

Question description

A solid sphere begins at rest and rolls down the incline and through a 2.0m radius loop without slipping. The sphere has a mass of 5.0kg and a radius of 0.125m. When it is at the top of the loop, the ball has a linear speed of 5.45m/s

A.) Indicate what variable determines if the sphere completes one trip around  the loop with the specified speed at the top of the loop and justify your answer qualitatively without using equations.

B) Justify your answer about what variable determines if the sphere completes one trip around the loop with the specified speed at the top of the loop with appropriate equations. The moment of inertia of a solid sphere is I=2/5mr^2

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