Question

angular accelaration is zero in 1.non uniform circular motion 2.uniform circular motion 3.rotational motion 4.spin motion​

Answer 1

Answer:

Uniform Circular Motion

When the angular acceleration is zero, that is, the speed of the particle executing the circular motion is constant, then the motion is said to be a uniform circular motion. The magnitude of the force experienced by the particle remains constant. The magnitude of the force is given by, F = Mv² R

Answer 2

The correct option to the above question is (2), which is a uniform circular motion.  When the angular acceleration is zero the motion is uniform circular motion.

• When the angular velocity is constant then the angular acceleration is zero because angular acceleration is the rate of change of angular velocity.
• So if angular velocity is constant, and angular acceleration is zero then the motion is said to be in uniform acceleration.

Angular acceleration -

• Angular acceleration is the rate of change of angular velocity and is usually expressed in radians per second per second.

Uniform circular motion -

• When a particle follows a path in which there is an equal distance at any time from a fixed point is said to be in a circular motion. If a particle moves with the constant speed along a circular path, then the motion is in a uniform circular motion.