Question

A mass $m$ is moving with a constant velocity along a line parallel to x-axis. Its angular momentum with respect to origin on z-axis is

• A. Zero
• B. Remain constant
• C. Goes on increasing
• D. Goes on decreasing

Answer 1

The correct option is B Remain constant

Angular moment of particle w.r.t $origin=linear$ momentum $x$ perpendicular distance on line of action of linear momentum from origin.
$=mv\times a=mva=constant$.