The rotor (flywheel) of a toy gyroscope hasmass 0.140 kg. Its moment of inertia about its axis is . The mass of the frame is 0.0250 kg. The gyroscopeis supported on a single pivot javascript:void(0); with its center of mass a horizontaldistance of 4.00 cm from the pivot. The gyroscope is precessing ina horizontal plane at the rate of one revolution in 2.20 s.

Find the upward force exerted by thepivot.

Find the angular speed with which the rotoris spinning about its axis, expressed in rev/min.

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## Answers ( 2 )

W is the weight = m g= 0.0250 kg * 9.8 m/s

^{2 }ris the horizontal distance = 0.04 mI is the moment of inertia =

? is the precession angular speed = 1 rev/ 2.20s= 2? rad /2.20 s = 2.85 rad/s

you plug the values andismplify you will get the answer