10.6 Exercise 4

A cyclist pedals to exert a torque on the rear wheel of the bicycle. When the cyclist changes to a higher gear, the torque increases. Which of the following would be the most effective strategy to help you determine the change in angular momentum of the bicycle wheel?

1. multiplying the ratio between the two torques by the mass of the bicycle and rider
2. adding the two torques together, and multiplying by the time for which both torques are applied
3. multiplying the difference in the two torques by the time for which the new torque is applied
4. multiplying both torques by the mass of the bicycle and rider