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

question 25

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 angular acceleration at t = 2.0 s?

• A)−10 rad/s²
• B)-5.0 rad/s²
• C)−5.4 rad/s²
• D)2.4 rad/s²
• E)3.1 rad/s²

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