Question

A particle P is moving along a straight line as shown in the figure. During the motion of the particle from A to B the angular momentum of the particle about O

Answer 1

the correct choice is

3) remains constant

Let

m = mass of particle

v = velocity of the particle

r = perpendicular distance of the particle from point "O"

we know that the angular momentum of a particle is given as

L = m v r

at all points on the line AB (the path being followed by the particle) , the mass "m" , velocity "v" and perpendicular distance "r" remains constant. hence angular momentum remain constant for the particle.

Answer 2

hope it helped you :)