Multiple Choice
A grindstone of radius 4.0 m is initially spinning with an angular speed of 8.0 rad/s. The angular speed is then increased to 12 rad/s over the next 4.0 seconds. Assume that the angular acceleration is constant.
-What is the magnitude of the angular acceleration of the grindstone?
A) 0.50 rad/s2
B) 1.0 rad/s2
C) 4.5 rad/s2
D) 9.0 rad/s2
E) 18 rad/s2
Correct Answer:
Verified
Correct Answer:
Verified
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