Force & Extension - Hooke's Law

Question 1

ELASTIC & PLASTIC DEFORMATION

What is a deforming force?

Answer 1

A deforming force is one that can be used to change the shape or size of an object.

Question 2

ELASTIC & PLASTIC DEFORMATION

What is Elastic Deformation?

Answer 2

Deformation is elastic if atoms or molecules return to their original position when deforming forces are removed.

Question 3

ELASTIC & PLASTIC DEFORMATION

What is Plastic Deformation?

Answer 3

Deformation is plastic if atoms or molecules in a material do not return to their original positions when deforming forces are removed.

Question 4

Hooke’s Law

What does Hooke’s Law state?

Answer 4

Hooke’s Law states that the extention is directly proportional to the load or applied force provided that the elastic limit is not exceeded.

Question 5

Hooke’s Law

What is the equation for Hooke’s Law?

& formula

Answer 5

In equation form: x∝y / y∝x
Formula: F = kx.

Question 6

Hooke’s Law

What does k refer to in the formula
F = kx?

Answer 6

k refers to the constant of proportionality or the spring constant

Question 7

Hooke’s Law

What graphs represent Hooke’s law?

Answer 7

Graphs of F vs. X or X vs. F

Question 8

Hooke’s Law

What is the elastic limit?

Answer 8

This is the point after which the material no longer obeys Hooke’s Law and it becomes permanently extended.