Why is P/A equal to 83kPA at an eccentricity ratio of 1?

[chetzread]

Homework Statement

in this question , ( in second photo) i don't understand that why at eccentricity ratio = 1 , P/ A is 83kPA , why the vertical line is drawn at a point between 100 and 150 KL/r to find P/A ?

Homework Equations

The Attempt at a Solution

Is it wrong ? Or I left out something? [/B]

 

[chetzread]

bump

 

[PhanthomJay]

The vertical line is drawn at the given kl/r of 104.
You are trying to cram 4 years of engineering into 4 weeks. It won't work. Focus on the basics please.

 

[chetzread]

H

The vertical line is drawn at the given kl/r of 104.
You are trying to cram 4 years of engineering into 4 weeks. It won't work. Focus on the basics please.

How do we know that kl /r =104??

 

[PhanthomJay]

Given in first image