# A classical mechanics problem by Iwan Darmawan

A solid sphere (mass = 1 kg and radius = 1 meter) is on the hemisphere (mass = M = 4 kg, inner radius = R = 6 meter). This solid sphere is in pure rolling on M.

If $$\pi = 3$$ and $$\sqrt{0,6} = 0,75$$ For small oscillation, what is the period (in seconds)?

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