Rotational Kinetic Energy: A pencil that is 15.7 cm long is released from a vertical position with the eraser end resting on a table. The eraser does not slip as it tips over. Treat the pencil like a uniform rod. What is the angular speed of the pencil just before it hits the table?
A. 13.7 rad/s
B. 7.23 rad/s
C. 3.70 rad/s
D. 24.5 rad/s
E. 16.8 rad/s
Answer: A
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