Question 201
What happens to the total angular momentum if the net external torque is zero?
Question 202
Under what condition does the center of gravity coincide with the center of mass?
Question 203
When is the total torque on a system independent of the choice of origin?
Question 204
Can a system experience zero net external force but still have non-zero net external torque?
Question 205
What additional condition is needed to prove that the rate of change of angular momentum equals total external torque?