Rotational Motion - Self Test
Solution to Question 4
(a) The torque is:
(b) The moment of inertia for a thin-walled, hollow cylinder is:
Figure 1
Diagram from Question 4
(c) Recall that the net torque is equal to the moment of inertia multiplied by angular acceleration:
Since there is only one torque on the bicycle wheel, then the net torque is simply
:
Rearranging the above equation for
, and substituting for
and I, we get:
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