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Question 30445
JEE Physics · Medium

Work, Power and Energy: Mechanical Energy — Pendulum MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Mechanical Energy — PendulumMediumQuestion 30445

Question

A pendulum (length L) is released from horizontal position. Speed at the lowest point is:
  1. A
    √(gL)
  2. B
    √(2gL)
    Correct
  3. C
    2√(gL)
  4. D
    √(gL/2)

Correct answer

√(2gL)

Explanation

Height drop = L (from horizontal to lowest). Energy conservation: ½mv² = mgL → v = √(2gL).

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