A mass M is moving with a constant velocity on a line parallel to the x-axis. Its angular momentum with respect to the origin or z-axis
A) is zero
B) remains constant
C) goes on increasing
D) goes on decreasing
Correct Answer:
B
Solution :
Angular momentum of particle w.r.t. origin = linear momentum\[\times \]perpendicular distance of line of action of linear momentum from origin \[=mv\times a=mva=\]constant