For a particle performing uniform circular motion, choose...

Name: Problem 20, Chapter 5: Master Resource Book in JEE Main Physics
Uploaded: 2022-01-15T16:45:15-08:00
Duration: 2 min 3 s
Channel: Prabhu Ramji
Description: For a particle performing uniform circular motion, choose the correct statement (s) from the following [NCERT Exemplar] (a) Magnitude of particle velocity (speed) remains coonstant (b) Particle velocity remains directed perpendicular to radius vector (c) Direction of acceleration keeps changing as particle moves (d) Angular momentum is constant in magnitude but direction keeps changing

For a particle performing uniform circular motion, choose the correct statement (s) from the following [NCERT Exemplar] (a) Magnitude of particle velocity (speed) remains coonstant (b) Particle velocity remains directed perpendicular to radius vector (c) Direction of acceleration keeps changing as particle moves (d) Angular momentum is constant in magnitude but direction keeps changing

For a particle performing uniform circular motion, choose the correct statement (s) from the following [NCERT Exemplar]
(a) Magnitude of particle velocity (speed) remains coonstant
(b) Particle velocity remains directed perpendicular to radius vector
(c) Direction of acceleration keeps changing as particle moves
(d) Angular momentum is constant in magnitude but direction keeps changing

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Key Concepts

Uniform Circular Motion

Uniform circular motion refers to the motion of a particle along a circular path with a constant speed. Despite the constant speed, the continuous change in the direction of the velocity vector results in an acceleration, emphasizing the non-linear nature of the motion.

Velocity Direction in Circular Motion

In circular motion, the instantaneous velocity vector is always tangent to the circle and, as a result, perpendicular to the radius vector at any point. This geometric relationship is a fundamental property that provides insight into the dynamics of circular motion.

Centripetal Acceleration

Centripetal acceleration is the acceleration directed towards the center of the circle that is responsible for changing the direction of the velocity vector without altering its magnitude. It is a key concept in circular motion as it maintains the circular path of the particle.

Angular Momentum

Angular momentum, defined as the cross product of a particle's position vector and its linear momentum, is crucial in rotational dynamics. In the context of circular motion, while the magnitude of angular momentum may remain constant, its direction can change depending on the chosen reference point and the frame of analysis.

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