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Question 30501
JEE Physics · Easy

Center of Mass, Momentum and Collision: COM — Two Bodies MCQ

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COM — Two BodiesEasyQuestion 30501

Question

The centre of mass of a system of two particles (m₁ = 1 kg at x = 0, m₂ = 3 kg at x = 4 m) is at:
  1. A
    1 m
  2. B
    2 m
  3. C
    3 m
    Correct
  4. D
    0.5 m

Correct answer

3 m

Explanation

x_cm = (m₁x₁ + m₂x₂)/(m₁+m₂) = (1×0 + 3×4)/4 = 12/4 = 3 m.

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