# 901 slide show slide 13-15

These are problems concerning calculation of torque. You can find first the component of force that is perpendicular to the R. Then multiply that force component with R to get torque $\tau=F_\perp R$.
Once have torque, you can use $\tau_{net}=I\alpha$ to get the angular acceleration.
Here, the moment of inertia of the wheels will be approximated with a ring -- $I=mR^2$.