Hooke’s Law and Young’s Modulus – A Level Physics
A description of Hooke’s Law, the concepts of stress and strain, Young’s Modulus (stress divided by strain) and energy stored in a stretched material.
A description of Hooke’s Law, the concepts of stress and strain, Young’s Modulus (stress divided by strain) and energy stored in a stretched material.
Well explained, thanks
on the graph, isnt stress supposed to be the x value and strain the y
value. it technically doesnt matter until you draw the actual curve
Very good educational video, but at 15:50 isn’t that supposed to be the
Energy per unit volume, (Not the Energy).
Since Energy = 1/2 Fx , and 1/2 Stress x Strain = 1/2 F x X / A x l =
Energy/Volume .
Please correct me if I’m wrong, Thank You
Hi, when I learned this I was taught that when you do an experiment to plot
a stress-strain graph, the area does change (particularly during plastic
deformation when the material starts to neck). I don’t really fully
understand this so I could be wrong.
sorry at 15:43 you say the area under the graph is elastic potential energy
stored in the string, but surely it couldn’t be, as the unit of
stressXstrain would be the same as Stress/strain as strain has no unit?
Also if its you have the time would you mind explaining to me hysteresis?
Thank you.
Great video! But I think an example at the end would have been very useful.
if i didn’t understand wrong, young’s modulus is actually the work done to
per unit volume which is streching . But if i think of a spring, what is
the volume? spring would have a free space inside the helix shape unlike a
wire. is it still consistent?
I am having trouble understanding the difference of Flexural Modulus @ 1%
Deformation versus Flexural Modulus @ 1% Secant.
This was a good video but at 14:58 , the area of the wire does in fact
change because the length is increasing as it’s being strected, and the
volume of the wire is constant, therefore V=A x l , thus, A= V/l , in which
case the length DOES in fact change but really good video otherwise. Thank
you
Hooke’s Law so clearly explained, and the associated physics too. Thank you.
Always interested in Hooke’s Law. Robert Hooke is part of our family tree!!
Thanks, great video.
perfect!
what about springs in series and parallel?
it was really helpful… thanx
Great Video, what exam board(s) do you cover?
Thanks for the help
superb
Other than that, I thought it was brilliant though! :)
I think you made a little mistake there when you said that the point was
elastic limit. It is actually considered to be the limit of proportionality
as after that point when more masses are added it does not obey hookes law
and hence there’s no “proportional” extension. However if the masses are
removed it will comeback to its original position.
But after the limit of proportionality comes the elastic limit, after this
point even if the masses are removed the spring will not go back to its
original position. :)
your videos are pulling through my a-levels, keep it up!
We need good educational Films on youtube like these films,because it is
revision for me. My thanks go’s to the lecturer & person who produced the
films and also youtube.”Thank’s”.
Straight away subscribed you. Great teaching, thanks!
simple but detailed illustrations there.
Thanks!
Thank you so much sir
You are a ledge, I have been studying this in science for weeks and my
teacher does not explain shit all, I’ve just learned how to do this in a
quarter of an hour. Cheers pal, have a nice day ;)