Question

A rubber wheel on a steel rim spins freely on a horizontal axle that is suspended by a fixed pivot at point P. When the wheel spins at a rate of 4.00 rev/s, it precesses smoothly about point P in a horizontal plane with a period of 3.50 s. The wheel's outer radius is 15.0 cm, and its total mass is measured to be 1.12 kg, 60% of this being the spinning wheel, and 40% its axle assembly. The wheel and its axle are both symmetric about the middle of the wheel, and the pivot point P is 4.70 cm from the wheel's middle.
a. its axle considered as a body.
b. What is the direction of the net torque on the wheel about the pivot point P?
c. If the wheel is spinning counterclockwise (0) as seen from point B on the wheel's axle, what is the direction of its spin angular momentum referenced to the diagram?
d. As seen from point A above the pivot, which way is the wheel precessing (C or O)? Please give your reasoning.
e. Using this information, determine the moment of inertia I of the wheel about its axle. Please be sure your work is clear.

Answer 1

Answer:

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Explanation: