Question

A particle moves with a constant velocity parallel to the $X-axis$. Its angular momentum with respect to the origin

• A. is zero
• B. remains constant
• C. goes on increasing
• D. goes on decreasing

Answer 1

The correct option is B remains constant

Angular momentum $L=myv$

where y is the distance of the particle on y-axis from the origin and v is the velocity. Since the particle is moving parallel to x-axis, so its distance on the y-axis from the origin remains the same and thus its angular momentum about the origin remains the same.