Q. A mass $m$ is moving with a constant velocity along a line parallel to $x$-axis. Its angular momentum with respect to origin an $z$-axis is
A) Zero
B) Remains constant
C) Goes on increasing
D) Goes on decreasing
Explanation
(b) Angular moment of particle w.r.t., origin
=linear momentum$\times$perpendicular distance of line of action of linear momentum from origin
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$= mv \times a = mva =$constant
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.