Springs Flashcards

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1
Q

State Hooke’s law.

A

The extension is proportional to the force applied provided the limit of proportionality is not exceeded. F=kx where F is the force applied in Newtons, k is the force constant dependent on the material being stressed in Nm^-1 and x is the extension in metres

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2
Q

Define Elastic Deformation.

A

A reversible change in the shape of an object due to a compressive or tensile force; removal of stress or force will return the object to its original shape.

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3
Q

Define Plastic Deformation.

A

An irreversible change in the shape of an object due to a compressive or tensile force; removal of the stress or force will not return the object to its original shape.

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4
Q

Define Force constant.

A

The amount of force required to produce an extension of one metre (when using S.I units).

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5
Q

Define Extension.

A

The difference between the length when under load and the original length.

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