Question

Discuss the causes of friction.​

Answer 1

Answer:

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.

Answer 2

Answer:

friction is also contrained over variocosities , active inflammation , skin infections or recently strained muscles . while friction techniques are great way to increase circulation locally it can also act as an irritant and aggravate underlying conditions and must be used with care

Explanation: