Friction Force
by Yufan Lu
What is Friction Force:
Fraction force is a force between two surfaces, preventing them from sliding or slipping away. There are two types of friction force: static friction and kinematic friction. (Source)
Car Sliding on Ice
- Static Friction Force: the friction that exists between a stationary object and the surface on which it's resting. It can be represented by the function Fs ≥ μs*N.
- Kinematic Friction Force: Kinematic friction force is a force that acts between moving surfaces. It can be represented by the function Fk = μk*N. (Source)
Real Life Application:
There are many real life application of the friction force. One of them is the brake system in car. To stop a car, the brakes have to get rid of that kinetic energy. They do so by using the force of friction to convert that kinetic energy into heat. By doing so, the car wheels stop moving. However, if there is no friction force, the car will just keep moving. This is why it is hard for cars to brake on smooth surface such as wet snow and ice. (Source)
Car Sliding on Ice
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