WAEC - Physics (1988 - No. 42)
Which of the following statement is not correct about loaded spiral spring?
The extension is proportional to the load applied, provided the elastic limite is not exceeded
If the elsatic limit is not exceeded, the contraction is proportional to the load removed.
Up to the yield limit, extension is no longer proportional to the applied load.
Beyond the elsatic limit, extension is no longer proportional to the applied load.
If the string regains its shape or form after deformation, it is said to be elastic.