1) What is friction give two examples ?
2) What is the cause of Friction?
3) write the types of friction ?
Answers
Friction is a force that resists the relative motion between two objects or materials. The causes of this resistive force are molecular adhesion, surface roughness, and deformations. Adhesion
is the molecular force resulting when two materials are brought into close contact with each other.
Everyday Examples of Sliding Friction. Specific examples of sliding friction include: Rubbing both hands together to create heat. A sled sliding across snow or ice.
There are four types of friction: static, sliding, rolling, and fluid friction. Static, sliding, and rolling friction occur between solid surfaces. Static friction is strongest, followed by sliding friction, and then rolling friction, which is weakest. Fluid friction occurs in fluids, which are liquids or gases.