Module 3 - 3.4.1 Springs

Question 1

Elastic Deformation

Answer 1

The material returns to its original shape after the deforming force has been removed

Question 2

Plastic Deformation

Answer 2

The material remains stretched after the deforming force is removed
(occurs when the material has reached its elastic limit)

Question 3

Stiffness

Answer 3

The ability of a material to resist a tensile force

Question 4

Spring Constant (k)

Answer 4

• a measure of a spring’s stiffness
• a higher value of k means a higher stiffness

Question 5

Hooke’s Law

Answer 5

Up to a certain level of force, the extension produced is proportional to the force applied

Question 6

Tensile Forces causing a positive extension are…

Answer 6

equal and opposite and act outwards

Question 7

Extension Depends on

Answer 7

• the material
• the length
• the cross-sectional area

Question 8

Limit of Proportionality

Answer 8

The point at which the extension is no longer directly proportional to the force

Question 9

Elastic Limit

Answer 9

The point where the material no longer shows elastic behaviour

Question 10

Fracture Point

Answer 10

The point at which the material will break

Question 11

Force-Extension Graphs: a straight line indicates

Answer 11

The material follows Hooke’s Law