Question

friend help me to slove this​

Answer 1

Explanation:

2 Causes of Friction: 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.

3 Rolling friction occurs when a wheel, ball, or cylinder rolls freely over a surface, as in ball and roller bearings. The main source of friction in rolling appears to be dissipation of energy involved in deformation of the objects.

4 Sliding friction (also called kinetic friction) is a contact force that resists the sliding motion of two objects or an object and a surface.

Answer 2

Answer:

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