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(a) The angular velocity is w = = = 5.383 radians per second.
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| You take the full rotation angle radians |
| of 12 rotations, and divide it by the time of 14 seconds. |
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(b) The distance = w*R = 5.383 * 0.35 = 1.884 m/s.
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| You take the angular velocity and multiply it by the radius. |
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Solved and carefully/thoroughly explained.