Week 4 Friction Flashcards
1
Q
what is friction
A
the force that opposes relative motion of two surfaces in contact with one another
2
Q
what are the 2 types of friction
A
static friction
dynamic friction
3
Q
when does static friction occur
A
When the block is stationary
4
Q
when does dynamic friction occur
A
When the block is moving
5
Q
what is the dynamic friction equation
A
Ff = μN Friction = coefficient of friction x Normal reaction force
