Question

a uniform circular motion is an accelerated motion. explain it. state whether the acceleration is uniform or variable. name the force responsible to cause this acceleration. what is the direction of force at any instant​

Answer 1

Answer:

When the body moves in a circular path with uniform speed, it is called uniform circular motion .

It is possible for a body to move in a circular path with uniform speed as long as it is traveling equal distances in equal interval of time, but the velocity cannot be uniform since the direction of motion is continually changing.

Hence due to the change in velocity, the motion is an accelerated motion, circular accelerated motion. Though, the speed may not change but direction will change.

force is centripetal force.

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Answer 2

Answer:

In a uniform circular motion, a body moves with a constant speed but although the speed is constant the direction is always changing so and direction is important for a uniform circular motion so velocity is used which contains both magnitude and direction. Now, since the body is moving and direction is changing, it leads to the body differing in velocity in a time interval, which itself is acceleration.So, uniform circular motion is an accelerated motion.

Acceleration is variable, the reason being explained above.

Centripetal force, since it is directed towards the centre.

The direction of the force at any instant is a tangent drawn on the circle from that point.