MHT CET 2026 Physics question
A block is fastened to a horizontal spring. The block is pulled to a distance x = 10 cm from its equilibrium position (at x = 0) on a frictionless surface from rest. The kinetic energy of the block at x = 5 cm is 0.25 J. The spring constant of the spring is nearly (in )
Answer: (C)
Solution
The block is released from rest at cm, so the amplitude is m. By energy conservation, at equals . At m: . Hence $k =
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