Question

In uniform circular motion, which of the following are constant: speed, velocity, angular velocity, centripetal acceleration, magnitude of the net force?

Short answer

Speed, angular velocity and magnitude of the net force are always constant in uniform circular motion.

Step-by-step solution

Given information

speed

velocity

angular velocity

centripetal acceleration

net force during uniform circular motion.

Explanation

A uniform circular motion in which the magnitude and direction of fundamental parameters need to be verified.

In uniform circular motion the magnitude of velocity that is speed is constant, but its direction is towards the tangent at that point which is shown in the figure. So speed is constant but velocity is not constant.

Angular velocity of a uniform circular motion is always constant.

Centripetal acceleration is always constant in magnitude, but its direction is changing all the time, so it is not a constant. Since acceleration is constant in magnitude the magnitude of net force is always a constant.

conclusion: Speed, angular velocity and magnitude of the net force are always constant in uniform circular motion.