Rotational Motion - Self Test

Question 4: Angular Acceleration
You spin a bicycle wheel (diameter of 0.85 m, mass of 4.5 kg), applying a force of 24 N tangentially. You will find the angular acceleration of the wheel by the following steps.

(a) What is the torque on the wheel?

    A. 5.1 N m
    B. 9.8 N m
    C. 10.2 N m
    D. 20.4 Nm

Figure 1 Schematic diagram of the bicycle wheel
(b) Assuming the wheel is a thin-walled hollow cylinder, what is its moment of inertia?

(c) Find the angular acceleration, , of the wheel.