The rotor (flywheel) of a toy gyroscope has mass 0.150 kg . Its moment of inertia about its axis is 1.20×10-4kg·m2. The mass of the frame is 2.70×10-2 kg . The gyroscope is supported on a single pivot (Figure 1) 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 2.10 s .
