Page 455 - College Physics For AP Courses
P. 455
Chapter 10 | Rotational Motion and Angular Momentum 443
10.7 Gyroscopic Effects: Vector Aspects of Angular Momentum
29. A globe (model of the Earth) is a hollow sphere with a radius of 16 cm. By wrapping a cord around the equator of a globe and pulling on it, a person exerts a torque on the globe of 120 N • m for 1.2 s. What angular momentum does the globe have after 1.2 s?
30. How could you use a fishing reel to test the relationship between the torque applied to a system, the time for which the torque was applied, and the resulting angular momentum of the system? How would you measure angular momentum?
