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A boy is whirling a rock attached to a string overhead in a horizontal circle. The rock makes a complete loop in 0.50s and the

A boy is whirling a rock attached to a string overhead in a horizontal circle. The rock makes a complete loop in 0.50s and the string is 0.60m long. a. Find the speed of the rock b. Find the centripetal acceleration of the rock. c. If both the speed and radius of the rock are doubled what happens to the acceleration

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