An athlete swings a ball, connected to the end of a chain, in a horizontal circle. The athlete is able to rotate the ball at the rate of 7.46 rev/s when the length of the chain is 0.600m. When he increases the length to 0.900m, he is able to rotate the ball only 6.08 /.
Which rate of rotation gives the greater speed for the ball?
A. 6.08 /
B. 7.46 /