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AP EAMCET202022 Sep 2020Morning ShiftPhysicsCenter of Mass, Momentum and CollisionActual

Two atoms of oxygen are located at r ₁ and r ₂ . Their centre of mass is at

Options

  1. Ar₁+r₂
  2. Br₁-r₂ 2
  3. Cr₁+r₂ 2
  4. Dr₁-r₂

Correct answer

C. r₁+r₂ 2

Step-by-step solution

Centre of mass of two atoms of oxygen is given as aligned r _ CM & = m₁ r ₁+m₂ r ₂ m₁+m₂ = m r ₁+m r ₂ m+m [ m₁=m₂=m ] & = m ( r ₁+ r ₂ ) 2 m r _ CM & = r ₁+ r ₂ 2 aligned

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