Spring Energy and Conservation of Energy questions with solutions

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• MCQeasyWork , Power and EnergySpring Energy and Conservation of Energy

  If a rubber ball falls from a height h and rebounds upto the height of h/2. The percentage loss of total energy of the initial system as well as velocity ball before it strikes the ground, respectively, are:

  Options

  • Option A

    50%, √(gh/2)

  • Option B

    50%, √(gh)

  • Option C

    40%, √(2gh)

  • Option D

    50%, √(2gh)

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  JEE Mains 2024 04 Apr Morning Shift

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• MCQmediumWork , Power and EnergySpring Energy and Conservation of Energy

  Two blocks with masses 100g and 200g are attached to the ends of springs A and B as shown in figure. The energy stored in A is E. The energy stored in B, when spring constants $k_{A}$, $k_{B}$ of A and B, respectively satisfy the relation 4$k_{A}$= 3$k_{B}$, is :

  

  Options

  • Option A

    4E

  • Option B

    2E

  • Option C

    3E

  • Option D

    4E/3

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  JEE Mains 202623 January Morning Shift

  Open question & full solution →