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23 Nov 2019
A CD with a diameter of 12.0 cm starts from rest and with aconstant angular acceleration of 1.0 rad/sec2 acquires an angularvelocity of 5.0 rad/sec. The CD continues rotating at 5.0 rad/secfor 15.0 seconds and then slows to a stop in 12.0 seconds with aconstant angular deceleration. What is the centripetal accelerationof a point 4.0 cm from the center at the time 2.0 seconds from thestart?
A. 0.37 m/s2
B. 0.30 m/s2
C. 0.28 m/s2
D. 0.21 m/s2
E. 0.16 m/s2
A CD with a diameter of 12.0 cm starts from rest and with aconstant angular acceleration of 1.0 rad/sec2 acquires an angularvelocity of 5.0 rad/sec. The CD continues rotating at 5.0 rad/secfor 15.0 seconds and then slows to a stop in 12.0 seconds with aconstant angular deceleration. What is the centripetal accelerationof a point 4.0 cm from the center at the time 2.0 seconds from thestart?
A. 0.37 m/s2
B. 0.30 m/s2
C. 0.28 m/s2
D. 0.21 m/s2
E. 0.16 m/s2
Jamar FerryLv2
14 May 2019
