# An athlete swings a ball, conn

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 8.00 rev/s when the length of the chain is 0.600 m. When he increases the length to 0.900 m, he is able to rotate the ball only 6.00 rev/s. (a) Which rate of rotation gives the greater speed for the ball? (b) What is the centripetal acceleration of the ball at 8.00 rev/s? (c) What is the centripetal acceleration at 6.00 rev/s?

# An athlete swings a ball, conn

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 8.05 rev/s when the length of the chain is 0.600 m. When he increases the length to 0.900 m, he is able to rotate the ball only 6.29 rev/s.

(a) Which rate of rotation gives the greater speed for the ball?

6.29 rev/s
8.05 rev/s

(b) What is the centripetal acceleration of the ball at 8.05 rev/s?
m/s2

(c) What is the centripetal acceleration at 6.29 rev/s?
m/s2

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