omega = (33.3 revs / 60 seconds) * ( 2 * 3.14 radians /rev) = 3.49 radians/second
R = 0.13 meter
v = omega * R = 3.49 * 0.13 = 0.453 m/s
Grace is playing with her dolls and decides to give them
a ride on a merry-go-round. She places one of them on
an old record player turntable and sets the angular speed
at 33.3 rpm. (a) What is their angular speed in rad/s?
(b) If the doll is 13 cm from the center of the spinning
turntable platform, how fast (in m/s) is the doll moving?
1 answer
1 answer