JEE Physics · Hard

Center of Mass, Momentum and Collision: JEE — Force from COM MCQ

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

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JEE — Force from COMHardQuestion 30559

Question

Two particles (m₁ = 1 kg, m₂ = 2 kg) are acted on by F₁ = 3 N and F₂ = 0. Acceleration of COM is:
  1. A
    3 m/s²
  2. B
    1 m/s²
    Correct
  3. C
    2 m/s²
  4. D
    6 m/s²

Correct answer

1 m/s²

Explanation

a_cm = F_total/(m₁+m₂) = (3+0)/3 = 1 m/s².