A particle of mass m moves in the XY plane with a velocity v along the straight line AB. If the angular momentum of the particle with respect to origin O is LA when it is at A and LB when it is at B, then :
Answer & explanation
Correct answer: option 1
Angular momentum = Linear momentum × distance of line of action of linear momentum about the origin.
LA = PA × d, LB = PB × d
As linear momenta are equal, therefore, LA = LB .