Elasticity, Spring Constant & Hooke's Law

What does the term ‘deformation’ mean?

The change in the shape of an object after forces have been applied

What is elastic deformation?

The change in the shape of an object which can return to its original shapes once the forces are removed

What is inelastic deformation?

The change in the shape of an object which cannot return to its original shapes once the forces are removed

On the graph, what sort of deformation occurs in the highlighted part of the line?

Inelastic deformation

On the graph, what sort of deformation occurs in the highlighted part of the line?

Elastic deformation

What is the minimum number of forces required to stretch, compress, or bend an object?

2

What does the term ‘spring constant’ mean?

A measure of how stiff a spring is

What does a higher spring constant mean?

The spring is more stiff

What does a lower spring constant mean?

The spring is less stiff

Which would have a higher spring constant, an elastic band or a hosepipe?

A hosepipe as it would require more force to stretch

What is Hooke’s Law?

The extension of an object is directly proportional to the force applied

What is the equation linked to Hooke’s Law?

F = k x e

What is the elastic limit?

The point which an objects being stretched stops deforming elastically but inelastically

What name is given to the point where extension is no loner proportional to force applied?

Limit of proportionality