Physics-
General
Easy

Question

A particle of mass m is moving along the side of a square of side 'a', with a uniform speed v in the x-y plane as shown in the figure: Which of the following statements is false for the angular momentum L rho about the origin?

  1. stack L with rightwards arrow on top equals m v invisible function application open square brackets fraction numerator R over denominator square root of 2 end fraction minus a close square brackets stack k with hat on top when the particle is moving from C to D.    
  2. stack L with rightwards arrow on top equals m v invisible function application open square brackets fraction numerator R over denominator square root of 2 end fraction plus a close square brackets stack k with hat on top when the particle is moving from B to C.    
  3. stack L with rightwards arrow on top equals fraction numerator m v over denominator square root of 2 end fraction R blank stack k with hat on top blankwhen the particle is moving from D to A.    
  4. stack L with rightwards arrow on top equals negative fraction numerator m v over denominator square root of 2 end fraction R blank stack k blank with hat on topwhen the particle is moving from A to B    

The correct answer is: stack L with rightwards arrow on top equals fraction numerator m v over denominator square root of 2 end fraction R blank stack k with hat on top blankwhen the particle is moving from D to A.

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