Question

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 1

Answer:

L

=

r

×

P

or

L

=

r

×m

V

Where

V

is velocity vector and we know that it is same at both points A and B .

r

is perpendicular vector on the velocity vector from origin that is perpendicular on line AB so

r

is also same in both cases .

So L

A

=L

B

Option C