# Physics

Anybody help me with this?

A disk with mass m = 6.5 kg and radius R = 0.41 m hangs from a rope attached to the ceiling. The disk spins on its axis at a distance r = 1.4 m from the rope and at a frequency f = 19.4 rev/s (with a direction shown by the arrow).

1) What is the magnitude of the angular momentum of the spinning disk?

kg-m2/s

2) What is the torque due to gravity on the disk?

N-m

3) What is the period of precession for this gyroscope?

s

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