COTTON CANDY AND WATER PUMP

Is there any connection between your house water pump and the cotton candy you eat at the carnival? yes, there is.

The centripetal force is always responsible for the rotations of a body. This force acts from the body to the center always. To every force, there is a reaction force. Here,it is known as centrifugal force which acts from the center towards the circling body radially.

Cotton candy machine:
A sugar reserve with added flavor and color is placed at the center of the rotating bowl. The sugar reserve is surrounded by an extruder- a metal cylinder with holes along its sides.
The sugar is heated and melted by an electric filament. The sugar liquid is thrown out radially through the holes in the extruder because of Centrifugal force. The thrown liquid solidifies as fibers in the rotating bowl. Then the sugar strands are collected by the stick. Your cotton candy is ready.

Centrifugal water pump:

In the water pump, a device called impeller is rotated by an electric motor. It has eye (a hole) at the center. The eye is connected to the upward going pipe. The impeller also has radial path carved on it.

First, we have to surround the impeller by the water- priming. When the impeller rotates, the water is thrown radially outwards from the eye because of centrifugal force. A vacuum or negative pressure is created at the eye. Hence water is sucked through the eye and moves upwards through the pipe. Centrifugal pump is the most preferred pump world wide.
There are many devices working on the principle of centrifugal force. It is just two of them.

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