Physics-
General
Easy

Question

Three particles of equal masses are placed at the corners of an equilateral triangle, as shown in fig. Now particle A starts with a velocity v subscript 1 end subscript towards line AB, particle B starts with a velocity v subscript 2 end subscript towards line BC and particle C starts with velocity v subscript 3 end subscript towards line CA. The displacement of C.M. of three particle A, B and C after time "t" will be (given if stack v subscript 1 end subscript with rightwards arrow on top equals stack v subscript 2 end subscript with rightwards arrow on top equals stack v subscript 3 end subscript with rightwards arrow on top )

  1. Zero    
  2. fraction numerator v subscript 1 end subscript plus v subscript 2 end subscript plus v subscript 3 end subscript over denominator 3 end fraction    
  3. fraction numerator v subscript 1 end subscript plus fraction numerator square root of 3 over denominator 2 end fraction v subscript 2 end subscript plus fraction numerator v subscript 3 end subscript over denominator 2 end fraction over denominator 3 end fraction    
  4. fraction numerator v subscript 1 end subscript plus v subscript 2 end subscript plus v subscript 3 end subscript over denominator 4 end fraction    

The correct answer is: Zero

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