Question

A point on a blade of a ceiling fan has(a) always uniform circular motion
(b) always uniformly accelerated circular motion
(c) may be uniform or non-uniform circular motion
(d) variable accelerated circular motion

Answer 1

Answer:

Explanation:B is the correct answer because fan will rotate in circular motion with its uniform body and in accelerated motion

Answer 2

A ceiling fan can have uniform or non-uniform circular motion depending on the speed it runs and the change in speed.

Explanation:

The net acceleration is towards the center in case of uniform motion. In case of non-uniform circulation motion, the net acceleration (tangential + normal) is not directed towards the center. When an object moves along a circular path, the direction of speed varies between any two points. So, the velocity also differs.

So, if an object moves on a circular path at varying speed, then we say that the object is having a non-uniform circular motion. Since the speed is not uniform, there will be a tangential acceleration as well as a normal acceleration.