Uniform Circular Motion

Uniform circular motion is the motion of an object along a circular path with a constant speed. In this motion, the object moves in a circle with a constant radius and the direction of the velocity changes continuously.

Quantities in Uniform Circular Motion

There are several quantities that are involved in uniform circular motion, including:

1. Linear momentum: This is the product of the mass and velocity of an object. In uniform circular motion, the direction of the velocity changes continuously, so the linear momentum also changes.

2. Speed: In uniform circular motion, the speed of the object remains constant. The speed is defined as the distance traveled per unit of time.

3. Angular velocity: This is the rate of change of the angle of the object as it moves along the circular path. The angular velocity is constant in uniform circular motion.

4. Angular acceleration: This is the rate of change of the angular velocity of an object. In uniform circular motion, the angular acceleration is zero because the angular velocity is constant.

Quantity that does not remain constant

The correct answer to the given question is option A, linear momentum. The linear momentum of an object changes in uniform circular motion because the direction of the velocity changes continuously. However, the magnitude of the linear momentum remains constant.

Conclusion

In uniform circular motion, several quantities are involved, including linear momentum, speed, angular velocity, and angular acceleration. The linear momentum of an object changes because the direction of the velocity changes continuously. However, the magnitude of the linear momentum remains constant.

Linear momentum does not remain constant.