Question

The turntable of the record player is turning at 45 rounds per minute. A small object is at rest on the turntable at a distance d = 10 cm from the centre. Its velocity
A: is tangent to the circumference of radius d and has a magnitude of about 0.47 m/s
B: is tangent to the circumference of radius d and has a magnitude of about 47 m/s
C: is tangent to the circumference of radius d and has a magnitude of about 4.7 m/s
D: is directed radially and has a magnitude of about 0.47 m/s
E: is directed radially and has a magnitude of about 47 m/s