Tuesday, August 17, 2010

Inertia Examples



In this blog we are going to discuss about a physics topic Inertia. Do you know what is inertia?Here I am going to give you the inertia definition with inertia examples. 
There is a glass tumbler placed on a table over which is placed a card board
Now place a coin on the card board
The tumbler, the card board and the coin are all at rest
Now flick the card board. What do you observe?
You will notice that the coin falls vertically downwards

Observe that the coin does not move with the cardboard
However the coin falls downwards due to force of gravity
The coin does not move with the card board because of the property of matter called inertia

Inertia is the inability of a body to change by itself either the state of rest or of uniform motion along a straight line unless an external force is applied on it

Now let me give you another inertia example.
Here you can see the passengers in the bus leaning backward when the bus suddenly starts moving.
Why does this happen?
This is because the upper part of the body of the passengers continues to be at rest while the lower part starts moving along with the bus due to inertia
Similarly when a moving bus stops suddenly, the passengers will fall forward.
I believed that you get the concept  on this topic.Next blog we will discuss more about it.

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