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# A bicycle wheel has a diameter of 63.2 cm and a mass of 1.78 kg. Assume that the wheel is a hoop…

A bicycle wheel has a diameter of 63.2 cm and a mass of 1.78 kg. Assume that the wheel is a hoop with all of the mass concentrated on the outside radius. The bicycleis placed on a stationary stand and a resistive force of 120 N is applied tangent to the rim of the tire.

(a) What force must be applied by a chain passing over a 8.99 cm diameter sprocket if the wheel is to attain an acceleration of 4.54 rad/s2?

________N

(b) What force is required if the chain shifts to a 5.68 cm diameter sprocket?

________N

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