The Student Room Group
You need to know the cross section area of the sample and calculate it from stress = force/area
The yield point is the point beyond which the material is no longer elastic and undergoes a marked increase in extension for a small increase in the applied force. It's not observed for many materials. Mild steel is one that does.
Reply 2
Original post by Stonebridge
You need to know the cross section area of the sample and calculate it from stress = force/area
The yield point is the point beyond which the material is no longer elastic and undergoes a marked increase in extension for a small increase in the applied force. It's not observed for many materials. Mild steel is one that does.


Spank you!
Dear Lukey Sherlock,How are you? 9 years really went by quickly, how are the kids? You should come over for BBQ one day. I hope to see you soon :wink:Ps: Yes you can find the yield stress from a force-extension graphPPs: I dont really know much about it, im asthmatic PPPs: my miniature donkey choked on my inhaler again.loads of love,John H. Watson