I need help understanding PSI and FORCE

  • Thread starter alfiez23
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  • #1
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Main Question or Discussion Point

Does a 12" x 1.5"D tube filled with 10psi have more force on an piston than a 6" x 1.5"D tube filled with 10psi?

Or is 10psi the same on an object no matter what size the tank...
 

Answers and Replies

  • #2
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What is the area this pressure is acting on? Is it the same or different between the two cases?
 
  • #3
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The area of the piston would be the same.
 
  • #4
CWatters
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Lets say you have a conventional bicycle tyre pump (eg piston in a tube). The force you need to apply to the pump handle depends on the pressure in the tyre and area of the piston and NOT the volume of the tyre.
 

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