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Consider the situation shown in figure. Initially the spring is unstretched when the system is released from rest. Assuming no friction in the puley, find the maximum eleongation of the spring.

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The correct Answer is:
B
Mass of the body `=m `
Let the elongation be x
`So, 1/2 kx^2=mgh`
`rarrx=2 mg/k`
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HC VERMA-WORK AND ENERGY-Exercises
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  2. A block of mass m moving at a speed 'v' compresses a spring through a ...

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  3. Consider the situation shown in figure. Initially the spring is unstre...

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  4. A block of mass m is attached to two unstretched springs of spring con...

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  5. A block of mass m sliding n a smooth horizontal surface with velocity...

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  6. A small block of mass 100 g is pressed against a horizontal spring fix...

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  7. A small hevy block is attached to the lower4 end of a light rod of len...

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  8. Figure shows two block A and B, each having a mass of 320 g connected ...

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  9. one end of a spring of natural length h and spring constant k is fixed...

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  10. Figure shows a light rod of length l rigidly attached to a small heavy...

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  15. A heavy particle is usspended by a 1.5 m long string . It is given a h...

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  16. A simple pendulum of length L having a bob of mass m is deflected from...

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  17. A particle slides on the surface of a fixed smooth sphere starting fro...

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