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JEE Main Physics question

PhysicsMechanical Properties of SolidsJEE Main

Length of an elastic string is metre when the longitudinal tension is 3 N. Length of the string is metre when the tension is 5 N. If the length of the string is found to be , calculate the tension in the string in N.

Answer: 8

Solution

Since the string obeys Hooke's law, length for some constants . Using the two data points: . Solving for the

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Question ID VK-155211