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Question 30561
JEE Physics · Medium

Center of Mass, Momentum and Collision: JEE — Newton's Cradle MCQ

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JEE — Newton's CradleMediumQuestion 30561

Question

In Newton's cradle, if 2 balls are raised and released, how many balls rise on the other side?
  1. A
    1 ball at double speed
  2. B
    2 balls at same speed as initial
    Correct
  3. C
    3 balls at reduced speed
  4. D
    All 5 balls move

Correct answer

2 balls at same speed as initial

Explanation

Newton's cradle conserves both momentum and energy. 2 balls striking at speed v → 2 balls rise to the same speed v on the other side. This is the only combination that satisfies both conservation laws simultaneously.

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