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JEE Main Physics question

PhysicsMechanical Properties of SolidsJEE Main

A rubber cord catapult has cross-sectional area and initial length of rubber cord is 10 cm. It is stretched by 5 cm and then released to project a missile of mass 5 gm. Taking , the velocity of the projected missile is

Answer: (C)

Solution

Energy stored converts entirely into kinetic energy: , giving

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Question ID VK-155095