Homework Help: physics

Posted by HELP!!!! on Friday, March 25, 2011 at 7:18pm.

A demonstration gyroscope consists of a uniform disk with a 39-cm radius, mounted at the midpoint of a light 56-cm axle. The axle is supported at one end while in a horizontal position. How fast is the gyroscope precessing, in units of rad/s, if the disk is spinning around the axle at 34 rev/s?

physics - drwls, Saturday, March 26, 2011 at 9:31am
The equation you need can be found at
http://physics-animations.com/Physics/English/gyro_txt.htm

The mass will cancel out when you insert (1/2)M R^2 for the moment of inertia.
r in the reference above is the distance from the support point to the rotor. wp is the precession rate that you want
physics - Anonymous, Monday, April 4, 2011 at 6:05pm
what radius should we use again?
physics - Anonymous, Monday, April 4, 2011 at 6:05pm
what radius should we use again?

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