Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET
Exam
NEET
Subject
Physics
Chapter
Rotational Motion

NEET · Physics · Rotational Motion

A particle is moving uniformly along a straight line as shown in...

A particle is moving uniformly along a straight line as shown in the figure. During the motion of
the particle from A to B, the angular momentum of the particle about 'O'
A particle is moving uniformly along a straight line as shown in the figure. During the motion of the particle from A

Options

  1. Aremains constant
  2. Bincreases
  3. Cfirst increases then decreases
  4. Ddecreases

Correct answer

A. remains constant

Step-by-step solution

Angular momentum L=mvr where r is the perpendicular distance between velocity and reference point Here since the line AB is straight, there would only 1 perpendicular distance from reference point i.e OA So, Angular momentum at A =mvr Angular momentum at P =mvr Angular momentum at B =mvr Since, perpendicular distance between the line AB and O will always be R So all the points lying on the line AB will have same angular momentum equals to mvr.
Practice Rotational Motion on Quantrex Academy →

More from Rotational Motion

A solid sphere A of radius R and mass M is attached at a point to a smaller solid sphere… NEET 2026The angular speed of a flywheel is increased from 600 rpm to 1200 rpm in 10 s. The number… NEET 2026A thin wire of length ' L ' and linear mass density ' m ' is bent into a circular ring… NEET 2026A thin horizontal disc is rotating about a vertical axis passing through its fixed centre… NEET 2026The Sun rotates around its centre once in 27 days. What will be the period of revolution… NEET 2025A sphere of radius R is cut from a larger solid sphere of radius 2 R as shown in the… NEET 2025The radius of gyration of a solid sphere of mass 5 kg about X Y is 5 m as shown in… NEET 2024A wheel of a bullock cart is rolling on a level road as shown in the figure below. If its… NEET 2024 Full Rotational Motion list All NEET PYQs