Question

Why the tip of needle is Sharp

Answer 1

It is made sharp so that the needle may put the force on a very small area of the cloth, producing a large pressure sufficient enough to pierce the cloth being stitched.

Area decreases, force increases

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Answer 2

Answer:

Explanation:

We need maximum pressure.

•Pressure = Force/Area•

•So to increase pressure, we can :

> Increase Force

>Decrease Area

•Sharp surfaces have small areas

•Hence large pressure can be exerted

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