A CD with a Diameter of 12

question 11

Multiple Choice

A CD with a diameter of 12.0 cm starts from rest and with a constant angular acceleration of 1.00 rad/sec² acquires an angular velocity of 5.00 rad/sec. The CD continues rotating at 5.00 rad/sec for 15.0 seconds and then slows to a stop in 12.0 second with a constant angular acceleration. What is the magnitude of the (total) acceleration of a point 4.00 cm from the center at the time 30.0 seconds from the start?

• A) 0.0650 m/s²
• B) 0.0522 m/s²
• C) 0.0444 m/s²
• D) 0.0324 m/s²
• E) 0.0243 m/s²

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