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## Homework Statement

The rotor (flywheel) of a toy gyroscope has mass 0.140 kilograms. Its moment of inertia about its axis is 1.20x10^{-4} kilogram meters squared. The mass of the frame is 0.0250 kilograms. The gyroscope is supported on a single pivot with its center of mass a horizontal distance 4.00 centimeters from the pivot. The gyroscope is precessing in a horizontal plane at the rate of one revolution in 2.20 seconds.

Find the upward force exerted by the pivot.

Find the angular speed omega at which the rotor is spinning about its axis, expressed in revolutions per minute.

## Homework Equations

angular momentum and acceleration equations eg:

w = O / t

w= w0 + at

O = w0t + ½ at^2

w^2 = w0^2 + 2aO

## The Attempt at a Solution

having a lot of trouble determining what information is relevant in this question...very little idea how to go about it sorry.

i think it has to do with L = Iw, with I being 1.2x10^4, but i'm unsure of how to get the angular velocity, and after that the force they are asking for.