Materials: Hooke's Law

Which point on the graph represents the limit of proportionality?

• A

• B

• C

• D

What is the correct equation for Hooke's Law?

Which 2 answers provide the best definition of the value 'k'?

• k is the stiffness coefficient

• k is the spring constant

• k is the specific spring number

• k is the kinetic energy needed to stretch the spring

Which of these points represents the 'elastic limit'?

• A

• B

• C

• D

Which equations describe the energy stored in a spring?

Between which 2 points will the spring be experiencing 'plastic deformation'?

• A and B

• B and C

• B and D

• C and D

Which of these 3 materials has the highest spring constant?

• Steel

• Glass

• Copper

• They all have the same spring constant

The gradient of this graph is equal to?

• The energy stored in the spring

• The weight of the masses acting on the spring

• The extension per unit force of the spring

• The stiffness coefficient of the spring

The area under this graph is equal to?

• The energy stored in the spring

• The weight of the masses acting on the spring

• The extension per unit force of the spring

• The stiffness coefficient of the spring

The unit of 'k' (the spring constant) is?