AQA GCSE Physics - Hooke's Law

Hooke's Law describes the behaviour of which kind of material under tension?

• plastic
• metals only
• elastic
• non-metals only

Hooke's Law fails when a material reaches:

• breakdown
• its elastic limit
• end of its tether
• fracture stress

Hooke's law describes how as the force increases the rate of increase of ............ remains constant.

• the length of a spring

• gravity

• the extension of a spring

A graph of extension against force for an elastic material is:

• A downward curve
• An upward curve
• A straight line from any point on the x and y axis
• A straight line from the origin

If extension = Stretched length - original length. What is the extension of spring D.

• 1mm
• 2mm
• 3mm
• 0mm

A stiff material has a:

• high spring constant
• low spring constant
• spring constant of any value
• spring constant which is difficult to predict

A spring has a spring constant of 5 N/cm. What is its extension when loaded with 15 N?

• 4 cm

• 5 cm

• 3 m

• 3 cm

A spring extends 1.5 m under load 10 N. What is its spring constant?

• 0.15 N/m

• 10 N/m

• 6.7 N/m

• 15 N/m

A force of 100 N is applied to a spring with a spring constant of 2 N/m. How far will the spring extend?

• 200 m

• 5 cm

• 50 m

• 0.02 m

Spring with a spring constant of 5 N/m is extended by 2 m. What force must have been applied to the spring?

• 2.5 N

• 10 N

• 0.1 N

• 100 N