The nail is pushed into a wooden plank from its pointed end. - Vidyadip

Question

The nail is pushed into a wooden plank from its pointed end.

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Answer

The area of the pointed end of nail is very small than that of its head.
$-$For the same force, large pressure can be created by small area of the surface.
$-$Therefore, the small force produce a pressure sufficient to push the pointed end of the nail into the wooden plank.

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