A very small round ball is located near a large solid sphere of uniform density. The force that the large sphere exerts on the ball
A) is exactly the same as it would be if all the mass of the sphere were concentrated at the center of the sphere.
B) is approximately the same as it would be if all the mass of the sphere were concentrated at the center of the sphere.
C) is independent of the mass of the ball.
D) is independent of the mass of the sphere.
E) can only be calculated using calculus.
Answer: A
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Exhibit 12-2
The figure below shows a graph of angular velocity versus time for a man bicycling around a circular track.
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Use this exhibit to answer the following question(s).
Refer to Exhibit 12-2. What is his average angular acceleration, in rad/s2, in the period from t = 6 min to t = 8 min?
A.
B.
C.
D.
E.
