- #1
Reefy
- 63
- 1
Homework Statement
A constant horizontal force of magnitude 10 N is applied to a
wheel of mass 10 kg and radius 0.30 m as shown in the figure.
The wheel rolls smoothly on the horizontal surface, and the
acceleration of its center of mass has magnitude 0.60 m/s2.
(a) What are the magnitude and direction of the frictional force on
the wheel?
(b) What is the rotational inertia of the wheel about the rotation
axis through its center of mass?
Homework Equations
angular acceleration α = acceleration (COM) over radius
net torque = Iα
The Attempt at a Solution
I finished part a and found out that I have to use the equations above for part B. What I'm confused about is why I can't use the rotational inertia for a hoop about its central axis I = MR^2