The simulation of a rotating wheel below shows the relationship between net torque on the wheel and its angular acceleration. The center of the wheel is fixed so that the net external force on the wheel remains zero.
Is there a cost for using this resource?
No
Are there copyright restrictions?
Yes
Physlets, that is, the applets themselves, may be used to author new problems and these problems may be distributed along with the Physlet jar files for non-profit, educational purposes without requesting permission under certain conditions.