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Question 6120
NEET Physics · Hard

System of Particles & Rotational Motion: Centre of Mass MCQ

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Centre of MassHardQuestion 6120

Question

Three equal masses m at vertices of equilateral triangle (side a). COM from any vertex:
  1. A
    a/√3
    Correct
  2. B
    a/2
  3. C
    a√3/3
  4. D
    a/3

Correct answer

a/√3

Explanation

COM of equilateral triangle with vertices at (0,0), (a,0), (a/2, a√3/2) is at (a/2, a√3/6). Distance from vertex = a/√3 = a/√3.

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