A bicycle wheel has a diameter of 700mm and a mass of 3.0 kg. Most of the mass of the wheel is in the tire so you can treat it as a hoop. It is taken off the bicycle and put on a test stand where it can rotate by itself without being connected to the rest of the bicycle. a) How much torque would it take to make the wheel speed up from rest to 1.5 rev/sec in 10 sec? b) Now let’s suppose that the wheel is still on the test stand and the torque is being delivered to the wheel by pulling on a chain that goes around a gear on the same axis as the wheel (it works like how the chain powers the rear wheel of a normal bicycle). The gear has a diameter of 12.5 cm. How much tension would you have to put on the chain to make the wheel speed up from rest to 1.5 rev/sec in 10 sec?
A bicycle wheel has a diameter of 700mm and a mass of 3.0 kg. Most of the mass of the wheel is in the tire so you can treat it as a hoop. It is taken off the bicycle and put on a test stand where it can rotate by itself without being connected to the rest of the bicycle.
a) How much torque would it take to make the wheel speed up from rest to 1.5 rev/sec in 10 sec?
b) Now let’s suppose that the wheel is still on the test stand and the torque is being delivered to the wheel by pulling on a chain that goes around a gear on the same axis as the wheel (it works like how the chain powers the rear wheel of a normal bicycle). The gear has a diameter of 12.5 cm. How much tension would you have to put on the chain to make the wheel speed up from rest to 1.5 rev/sec in 10 sec?
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