1. What is the magnitude of the centripetal force that must be applied in order for a 0.50 kg ball on a 2.0 m string to spin with uniform circular motion at 5.0 m/s2.
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A 2 kg ball on a string is rotated about a circle of radius 10 m. The maximum tension allowed in the string is 50 N. What is the maximum speed of the ball?
The centripetal force in this case is provided entirely by the tension in the string. If the maximum value of the tension is 50 N, and the radius is set at 10 m we only need to plug these two values into the equation for centripetal force: