A wire gradually stretched by loading it until it snaps. (a) Sketch a load-extension graph for the wire (b) Indicate on the graph the (i) elastic limit (E);...
Question 1 Report
A wire gradually stretched by loading it until it snaps.
(a) Sketch a load-extension graph for the wire
(b) Indicate on the graph the
(i) elastic limit (E);
(ii) yield point (Y);
(iii) breaking point (B).
Answer Details
Load-extension graph for a wire stretched to breaking
Plot load (force) on the vertical axis against extension on the horizontal axis. The wire extends elastically at first. Beyond the elastic limit, permanent extension begins. At the yield point, the wire extends greatly with little increase in load. Eventually, the wire breaks at point B.
E is the elastic limit: up to this point, the wire returns to its original length when the load is removed.
Y is the yield point: the wire begins to undergo noticeable permanent deformation.
B is the breaking point: the wire snaps.
```Download The App On Google Playstore
Everything you need to excel in your exams
