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Mass m shown in the figure is in equilibrium. If it is displaced further by x and released, find its acceleration just after it is released. Take pulleys to be light and smooth and string light.

 
  • a)
  • b)
  • c)
  • d)
    None of these
Correct answer is option 'C'. Can you explain this answer?
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Massmshown in the figure is in equilibrium. If it is displaced further...
Initially the block is at rest under action of force 2T upward and mg downwards. When the block is pulled downwards by x, the spring extends by 2x. Hence tension T increases by 2kx. Thus the net unbalanced force on block of mass m is 4kx.

∴ acceleration of the block is = 
The correct answer is: 
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Massmshown in the figure is in equilibrium. If it is displaced further...
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Massmshown in the figure is in equilibrium. If it is displaced further...
Initially the block is at rest under action of force 2T upward and mg downwards. When the block is pulled downwards by x, the spring extends by 2x. Hence tension T increases by 2kx. Thus the net unbalanced force on block of mass m is 4kx.

∴ acceleration of the block is = 
The correct answer is: 
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Massmshown in the figure is in equilibrium. If it is displaced further byxand released, find its acceleration just after it is released. Take pulleys to be light and smooth and string light.a)b)c)d)None of theseCorrect answer is option 'C'. Can you explain this answer?
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