One question; three answers.

 

This may not be completely a scientific fact if you are not ready to allow for a little spice of imagination.

The question is that if you buy 1 Kg. Iron and 1 Kg cotton from the market, which one weighs more and why?

From an LP school boy. (You may adjust the age as you deem fit).

We all know that Iron is heavier than cotton. So surely the iron will weigh more.

From a UP schoolboy:

The mere mention of 1 KG indicates that both are equal in weight.

From a physicist:

In the above scenario, the question is which is more attracted to earth (since the definition of weight is the measure of gravitational force on it) assuming that it is not happening somewhere there is no cotton, iron, balances and people to buy etc.

Suppose the cotton and iron are leveling in a balance. What are the forces on them? The gravitation is earthward and the buoyancy (upthrust) upward. Surely upthrust is more on cotton because of the higher volume. (Think of Archimedes). Cotton is leveling with iron withstanding a greater buoyancy. So, it has a higher gravitational force on it. 1 KG cotton weighs more than one KG iron under practical situations.

Comments

Popular posts from this blog

ഭാഗ്യാതിരേക

ചോയിക്കുട്ടി കഥകൾ - രണ്ട് : അനാരോഗ്യമത്സരം

ജയം ഉറപ്പുള്ള കളികൾ