Spring constant

A measure of a spring’s stiffness: the force needed per metre of extension while force and extension are proportional.

A measure of the stiffness of a spring or other elastic object, measured in newtons per metre (N/m).

A measure of a spring’s stiffness, equal to force divided by extension in the proportional region.

A measure of a spring's stiffness, equal to force divided by extension and measured in newtons per metre (N/m).

The force per unit extension of a spring in its linear region, measured in newtons per metre.

A measure of a spring’s stiffness, expressed in newtons per metre (N/m).

The force applied to an object per unit extension in the region where force and extension are directly proportional; it is measured in newtons per metre (N/m).

A measure of the stiffness of a spring or another elastic object, equal to force divided by extension in the linear region.

The force needed per metre of extension in the linear region of a spring's force–extension relationship, measured in N/m.

The force needed per metre of extension in the linear part of a spring’s force–extension relationship, measured in N/m.

A measure of a spring’s stiffness: the force needed for each metre of extension within the straight-line region of a force–extension graph.