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A top spins at 65.0 rev/s about an axis that makes an angle 30.0o with the...

A top spins at 65.0 rev/s about an axis that makes an angle 30.0o with the vertical. The mass of the top is 0.5 kg, its rotational inertia about its central axis 7.0×10-4 kg*m2, and its center of mass is 7.0 cm from the pivot point. If the spin is in the counterclockwise from an overhead view, what is the (a) precession rate?

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Answer #1

We know that Precession rate is given by

: wp = mgr/iw where m is mass, I is moment of inertia , r is distance of center of mass, w is spinning velocity

= 0.5*9.8*0.07/[7e-4*2pi*65]

= 1.2 rad/s answer

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