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AP EAMCET202018 Sep 2020Evening ShiftPhysicsCenter of Mass, Momentum and CollisionActual

A bomb at rest explodes into three parts of equal mass. If the momentum of two parts are (-2 p i ) and (p j ), find the magnitude of momentum of the third part.

Options

  1. A(p )
  2. B( 3 p )
  3. C( 5 p )
  4. D0

Correct answer

C. ( 5 p )

Step-by-step solution

If (p^ n ) be the momentum of third parts, then according to conservation of linear momentum. Total moment before explosion (= ) Total momentum after explosion ( array lll & 0 =-2 p i +p j +p^ n & p^ n =2 p i -p j & Magnitude of p^ n =p^ & = (2 p)^2+(-p)^2 = 5 p^2 = 5 p array )

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