Demo 3 - Water Hammer

 
 
This is called a water hammer this is used in pipe lines around your house.
They all don't look like this, this a water hammer for a washing machine.There is different looking ones, it depends on where its being used.



This is made of glass, inside it is water only. 
The way this works is when you shake it it makes a sound like when you hit a bell and you hear ding and reason for this is because of surface tension. Surface tension is like a cohesion which means like molecules attaching to each other. Also because when the water hits the base of glass , the reaction force of the glass is not sufficient enough to break the surface tension , that is why the surface of water acts like a solid.
You know when you jump on the surface of water , it may harm you , because of the same reason.

YouTube Video


You can listen to the sound it makes from the videos down below

YouTube Video


YouTube Video



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