Stress vs strain curve | Class 11 (India) | Physics | Khan Academy

What happens if you stretch something beyond its elastic limits?
In this video, we will explore the regions beyond the elastic limits. We will take a steel rod and keep stressing it until it breaks. We will draw a graph of stress vs strain and explore all the different regions of it.
Created by Mahesh Shenoy

[@ankursamanta6785]

better explanation than any institute

[@trentonmartinez2476]

I've been taught this concept many times, but this was the best explanation. Thank you for the informational video!

[@seemarathore6120]

Never thought this topic is so interesting. Thanks!

[@Roshan-to8eh]

i didn't imagine this topic to be interesting at all. thank you for making it super easy and clear to us! 🙏

[@rahulsurwase6627]

Khan academy is the wonderful thing....you are changing world ...guys

[@anuragbhuyan3988]

I like khan academy

[@fun_g]

that pinching or necking gave me my first "OHHHHH SO THATS WHY" moment of this lesson

[@olynikac]

This is an amazing video! It never made sense to me why after max stress that the strain would increase as the stress decreased but that was a perfect explanation.

[@Tsaih181]

thank you for this very clear explanation!!

[@ahyanfaisal9081]

Damn ths guys exp so gud . It makes the companies look goofy 🤪

[@NiharikaAChirayil]

Thanks for the video!

[@chiranthr3045]

Awesome explanation. Neat to the point. ✌️

[@sthefanyguzman8209]

best explanation

[@motivationaldose9421]

Thank you sir

[@ayushijha9634]

I didn't understand necking , but thanks sir ❤

[@urty4395]

Stress keeps on increasing?
But the curve shows decreasing stress?

[@TheSarcasticClown]

Thank you...my "graduated" ass couldn't figure out why the graph shows decreasing stress.. it's calculating the stress on that very area where the necking happens. So area becomes less, stress becomes more. And the whole thing is based on behaviour of strain on application of stress, so there should be a steady increase of stress. WHY STRESS SUDDENLY DROPS AFTER ULTIMATE TENSILE STRENGTH.

[@vedantshankar210]

@@TheSarcasticClown brug , its total stress by total strain bro so even though its pinching in the middle and the area is decreasing there we still calculate the stress w.r.t to the original cross section , or another way to think of it is after ultimate..
the force applied at the ends of the rod is decreasing but because its pinched cross section is also decreasing at a higher rate the net stress on that particular section is increasing.

[@seemarathore6120]

Never thought this topic is so interesting. Thanks!