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A hollow sphere of radius 16cm and mass 10kg stars from rest and rolls without slipping...

A hollow sphere of radius 16cm and mass 10kg stars from rest and rolls without slipping a distance d=6.5m down a roof that is inclined at an angle of 36°.

a. What is the angular speed of the hollow sphere about its center as it leaves the roof?

b. The roof’s edge is at a height of 4.5m. How far horizontally from the roof’s edge does the hollow sphere hit the level ground?

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