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The rotor (flywheel) of a toy gyroscope has mass 0.130 kg. Its moment of inertia about its axis is 1.40 * 10^-4 kg·m^2. The mass of the frame is 0.0650 kg. The gyroscope is supported on a single pivot (Diagram: http://www.webassign.net/yf10/10-43.gif) with its center of mass a horizontal distance of 4.00 cm from the pivot. The gyroscope is precessing in a horizontal plane at the rate of one revolution in 2.50 s.

(a) Find the upward force exerted by the pivot.

(b) Find the angular speed with which the rotor is spinning about its axis, expressed in rev/min.

I know that I=(1/2)*M*R^2 so I found the radius of the rotor to be .0464 meters. I don't know where to go from there. Can anyone please help me with this?

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# Homework Help: Gyroscope Problem

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