A ball on a string with a mass of 0.55 kg is being swung in a horizontal circle. The centripetal force acting on the ball is 8.3 N. If the tangential velocity of the ball is 4.5 m/s, how long is the string?

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Explanation:

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach