In uniform circular motion, which of the following quantities are constant: speed, instantaneous velocity, tangential velocity, radial acceleration, tangential acceleration? which of these quantities are zero throughout the motion?

In the uniform circular motion, the speed and the radial acceleration remain constant during the motion and the tangential acceleration remains zero throughout the motion.

Explanation:

An object is considered to execute the uniform circular motion when it moves in a circular path of fixed radius at a constant speed throughout the motion.

The speed of the object remains constant during its motion but the velocity is not considered to be constant because the direction of speed of the particle change at every instant and due to change in direction, the velocity of the particle also changes at every instant.

The radial acceleration of the particle depends on the speed of the particle in circular motion and the radius of the circular path. The both quantities remain constant in uniform circular motion, so the radial acceleration will also remain constant.

The tangential acceleration is defined as the derivative of the tangential speed of the particle. In a uniform circular motion, the tangential speed remains constant so, the derivation of the speed will be zero. It means that the tangential acceleration remains zero during the motion.

Thus, In the uniform circular motion, the speed and the radial acceleration remain constant during the motion and the tangential acceleration remains zero throughout the motion.

Learn More:

1. The acceleration of the box under the friction is link

2. The distance covered by the ruck link

3. Conservation of momentum link

Answer Details:

Grade: High School

Subject: Physics

Chapter: Uniform circular motion

Keywords:

uniform circular motion, circular path, radius, constant speed, tangential velocity, radial acceleration, zero, tangential acceleration, change in direction.

d. air pressure decreases as altitude increases.