P4 - Mechanics and Materials Flashcards
1
Q
What is breaking stress?
A
Maximum stress an object can withstand before failure.
2
Q
What is a brittle material?
A
Low breaking stress.
3
Q
What is a couple?
A
Two equal and opposite parallel forces causing rotation.
4
Q
How can an object demonstrate elastic behaviour?
A
Returning to its original shape after being deformed.
5
Q
What is Hooke’s law?
A
The extension is proportional to the force applied up to the limit of proprtionality.
6
Q
What is Newton’s first law?
A
An object will remain in state of motion until acted on by a resultant force.
7
Q
What is Newton’s second law?
A
F=ma
8
Q
What is Newton’s third law?
A
Every reaction will have an equal and opposite reaction.
9
Q
What is plastic behaviour?
A
Not returning to its original shape after deformation.
