A rubber ball is attached to a string and whirled around in a circle. If the string is 1.5 m long (measured from the center of the ball to the far end of the string) and the ball's speed is 12 m/s, what is the ball's centripetal acceleration? The mass of the ball is 0.2 kg. What force is acting on this ball as it is whirled in a circle?
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