Parallel Forces Acting on a Plane
In I/GCSE Physics, that’s basically using the principle of moments (clockwise moment = anticlockwise moment) to find out whatever the question asks.
Forces Acting on a Beam
The upward forces on a light beam, supported at its ends, vary with the position of a heavy object placed on the beam in the I/GCSE physics.
For example(s):
Hooke’s Law
Elastic behavior is the ability of a material to recover its original shape after the forces causing deformation have been removed. In I/GCSE physics curriculum, Hooke’s Law states that: load force is directly proportional to extension provided that it is within its elastic limit
Once the spring or whatever has been stretched beyond the elastic limit, it will change shape permanently and will not return to its original shape.
Helical springs and metal wires give you a graph like the upper one (except in metal wires, the graph is steeper). However, elastic bands do not obey Hooke’s Law and you get a graph like this (lower).
End of this topic!