Finding stress and elongation in piston

[nerdeagle24]

Homework Statement

Estimate the stress in the piston rod (6 cm in
diameter) [MPa] and the elongation of the 1 m long piston rod [cm] under these static
condition. Since these are external to the fraction, steel is often used, as in this case.

Relevant Equations

delta(l)=F*l/E*A
E for steel is 200 MPa
A=pi*r^2

I am really just totally stuck. I think you need to find force being applied onto the rod but I cannot figure that out

 

[haruspex]

ind force being applied onto the rod

What is the relationship between pressure, force and area?

 

[nerdeagle24]

Pressure = F/A

 

[nerdeagle24]

What is the relationship between pressure, force and area?

Pressure =F/A

 

[haruspex]

Pressure =F/A

Right, and you are given a pressure and an area.