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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 8.66 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 6.22 rev/s (a) Which rate of rotation gives the greater speed for the ball? 6.22 rev/s 8.66 rev/s (b) What is the centripetal acceleration of the ball at 8.66 rev/s? m/s2 (c) What is the centripetal acceleration at 6.22 rev/s? No Points m/s2

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1 when L tentkof chain is o 60m o tation of bail : 86(wys ее /s en Cen so@) | Rate of rta ton tu; tf. 8heot«s stad = 6.217.y 衿) 2. Ciacle 2. 2. (35-17) Any

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