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Question 30430
JEE Physics · Hard

Work, Power and Energy: Energy — Spring-Block MCQ

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Energy — Spring-BlockHardQuestion 30430

Question

A block (mass m) compresses a spring (constant k) by d and is released on a smooth surface. It reaches height h on an incline. Which equation gives h?
  1. A
    mgh = ½kd²
    Correct
  2. B
    mgh = kd²
  3. C
    mgh = ½kd
  4. D
    mgh = 2kd²

Correct answer

mgh = ½kd²

Explanation

Spring PE = ½kd² is fully converted to gravitational PE at height h: ½kd² = mgh.

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