The Angular Velocity of a Rotating Turntable Is Given in Rad/s

question 88

Multiple Choice

The angular velocity of a rotating turntable is given in rad/s by ω(t) = 4.5 + 0.64t - 2.7t².What is its average angular acceleration between t = 1.0 s and t = 3.0 s?

• A)0.64 rad/s²
• B)−5.4 rad/s²
• C)−7.7 rad/s²
• D)−10 rad/s²
• E)−27 rad/s²

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