A(n) 0.2 kg object is swung in a vertical circular path on a string 0.1 m long. the acceleration of gravity is 9.8 m/s2 . if a constant speed of 6.38 m/s is maintained, what is the tension in the string when the object is at the top of the circle.

Explanation:

Since the object is under a circular motion, according to Newton's second law, when the object is at the top of the circle we have:

Where is the centripetal force and is given by:

Replacing and solving for T:

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explanation:

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