5. Friction Flashcards
1
Q
Friction
A
- Friction always acts in the opposite direction of motion
Limiting equilibrium: on the point of moving, friction at
max (limiting friction) - Limiting equilibrium is also used to describe a situation
when the object is about to slip, where friction is at its max - Smooth contact: friction negligible
2
Q
Formula for Friction
A
- Friction = Coefficient of Friction × Normal Contact
- F = μr
3
Q
Contact Force
A
- In situations where the particle is on a horizontal plane, the contact force or reaction force is equal to the weight of the particle (mg)
- In situations where the particle is on an inclined plane, the contact force or reaction force is equal to the verticle component of the weight of the particle (mgcos(θ))
