4.5.3 Forces and elasticity

You will need to use a combination of the materials we have collected here to enable you to succeed. The most important factor will always be your effort. Use the knowledge of your teacher, attend revision sessions, ask when you need help. Most importantly of all, stay confident! You can do this!

Learning Checklist & Knowledge Organiser

4.5.3 Forces and elasticity

Describe examples of the forces involved in stretching, bending or compressing an object
Explain why, to change the shape of an object (by stretching, bending or compressing), more than one force has to be applied – this is limited to stationary objects only
Describe the difference between elastic deformation and inelastic deformation caused by stretching forces
Describe the extension of an elastic object below the limit of proportionality and calculate it by recalling and applying the equation: [ F = ke ]
Explain why a change in the shape of an object only happens when more than one force is applied
Describe and interpret data from an investigation to explain possible causes of a linear and non-linear relationship between force and extension
Calculate work done in stretching (or compressing) a spring (up to the limit of proportionality) by applying, but not recalling, the equation: [ Ee= ½ke2 ]