Uniform Circular Motion: Two Particles, a and B, Are in Uniform

Multiple Choice

Uniform circular motion: Two particles, A and B, are in uniform circular motion about a common center. The acceleration of particle A is 8.5 times that of particle B. The period of particle B is 2.0 times the period of particle A. The ratio of the radius of the motion of particle A to that of particle B is closest to

A) r_A/r_B = 2.1.
B) r_A/r_B = 4.3.
C) r_A/r_B = 18.
D) r_A/r_B = 0.24.
E) r_A/r_B = 17.