alleryA wheel makes $360$ revolutions in one minute. Through how many radians does it turn in one **second**?
A$6\pi$
B$360\pi$
C$12\pi$
D$720\pi$
Answer & Solution
Correct answer: C. $12\pi$
360 rev/min = 6 rev/s. Each rev = $2\pi$ rad.
**So $6 \cdot 2\pi = 12\pi$ rad/s.**
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