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A uniform spherical shell of mass 8.60 kg with diameter 55.0 cm has four small masses...

A uniform spherical shell of mass 8.60 kg with diameter 55.0 cm has four small masses of mass 1.90 kg attached to its outer surface and equally spaced around it. This combination is spinning about an axis running through the center of the sphere and two of the small masses

What friction torque is needed to reduce its angular speed from 72.0 rpm to 49.0 rpm in a time interval of 27.0 s ?

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Answer #1

て 3 3 200 2ob 0.9336 + 0.2844-072 ks_mo 0.0643 Nm

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