Say you want to make a sling by swinging a mass M of 1.7 kg in a horizontal circle of radius 0.048 m, using a string of length 0.048 m. You wish the mass to have a kinetic energy of 14.0 Joules when released. How strong will the string need to be

Tension in the string is equal to 58.33 N ( this will be the strength of the string )

Explanation:

We have given mass m = 1.7 kg

radius of the circle r = 0.48 m

Kinetic energy is given 14 J

Kinetic energy is equal to

So

v = 4.05 m/sec

Centripetal force is equal to

So tension in the string will be equal to 58.33 N ( this will be the strength of the string )

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