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A solid metal ball starts from rest and rolls without slipping a distance of d =...

A solid metal ball starts from rest and rolls without slipping a distance of d = 4.2 m down a θ = 38° ramp. The ball has uniform density, a mass M = 4.7 kg and a radius R = 0.33 m.

What is the magnitude of the frictional force on the sphere?

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