# Piston and cylinder

i got a small doubt.. can any1 plz xplain me. if we apply a certain force"F" on cylinder of area of cross section A=pi*d^2/4(thatis,the diameter of cyllinder is d),then how much distance will the piston head move ??

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i got a small doubt.. can any1 plz xplain me. if we apply a certain force"F" on cylinder of area of cross section A=pi*d^2/4(thatis,the diameter of cyllinder is d),then how much distance will the piston head move ??

It depends on what's inside the cylinder.
- If we've packed the cylinder of concrete and allowed it to harden, the piston won't move at all, no matter how much force we apply.
- If the cylinder has no leaks and is full of an incompressible liquid, the piston won't move but the cylinder will burst if we apply enough force.
- If there's nothing in the cylinder at all, just vacuum, any force at all will cause the piston will move all the way to end of the cylinder
- If there is some compressible gas in the cylinder....