Change of shape
The important thing for your students to realise here is that two different forces can act on an object in balance, like weight acting down and normal reaction acting up. There will be no movement, but depending on the integrity of the object itself, its shape can change.
In looking at possible results of distorting the shape of an object, you can explore elastic and plastic behaviour of a material. This gives an opportunity to plot force extension graphs, to identify Hookes law and to determine spring constants and energy stored in the distorted shape.
Applying the correct equations to the solution of problems related to force, extension and energy stored allows your students to practise lots of math skills.
Whilst this list provides a source of information and ideas for experimental work, it is important to note that recommendations can date very quickly. Do NOT follow suggestions which conflict with current advice from CLEAPSS, SSERC or recent safety guides. eLibrary users are responsible for ensuring that any activity, including practical work, which they carry out is consistent with current regulations related to Health and Safety and that they carry an appropriate risk assessment. Further information is provided in our Health and Safety guidance.