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JEE Main Physics question

PhysicsMechanical Properties of SolidsJEE Main

A 5 metre long wire is fixed to the ceiling. A weight of 10 kg is hung at the lower end and is 1 metre above the floor. The wire was elongated by 1 mm. The energy stored in the wire due to stretching is [MP PET 1989]

Answer: (B)

Solution

The distance above the floor is irrelevant; the elastic energy stored depends only on the force

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Question ID VK-155117