A-LEVEL PHYSICS: 4.7.2: Hooke's Law (SaveMyExams)

Question 1

What happens when a Force is Applied to each end of a Spring?

Answer 1

It Stretches

Question 2

Hooke’s Law:

Answer 2

The Extension of a material is Directly Proportional to the Force applied, up to the Limit of Proportionality.

Question 3

Hooke’s Law Equation:

Answer 3

F=ke
F=kΔL

Question 4

What is ‘Spring Constant’?

Answer 4

Spring Constant is the Stiffness of a material.

Question 5

Hooke’s Law applies to both ___ & ___.

Answer 5

Extensions, Compressions

Question 6

Key Features of Force-Extension Graph: (

Answer 6

-Straight Line through the Origin

-Limit of Proportionality (Graph Curves)

-Elastic Limit

-Gradient = Spring Constant

Question 7

What is the ‘Limit of Proportionality’?

Answer 7

The Limit of Proportionality is the point at which Hooke’s Law is no longer true.

Question 8

What is the ‘Elastic Limit’?

Answer 8

The Elastic Limit is the point at which the material will no longer return to its Original Length.
After the Elastic Limit, the material will undergo Plastic Deformation.