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A stone is tied to one end of a string. Holding the other end, the string is whirled in a horizontal plane with progressively increasing speed. It breaks at some speed because ______

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Question

A stone is tied to one end of a string. Holding the other end, the string is whirled in a horizontal plane with progressively increasing speed. It breaks at some speed because ______ 

Options

  • The gravitational forces of the earth are greater than the tension in the string 

  • The required centripetal force is greater than the tension sustained by the string

  • The required centripetal force is lesser than the tension in the string

  • The centripetal force is greater than the weight of the stone

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Solution

A stone is tied to one end of a string. Holding the other end, the string is whirled in a horizontal plane with progressively increasing speed. It breaks at some speed because The required centripetal force is greater than the tension sustained by the string.

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Chapter 1: Rotational Dynamics - MCQ’s

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