Today, we’re taking a look at an interesting question: does friction require a knowledge of the physics principles behind it in order to be understood? To answer this question, we must first define what we mean by friction. Friction is the force that resists the relative motion of two objects that are in contact with one another. This resistance can be caused by a variety of mechanisms, including the molecular adhesion between the two surfaces, the interlocking of their irregularities, and the air resistance between them.

So, does friction require an understanding of the physics principles that underlie it? The answer is yes! To understand why two objects rub against each other, we must first understand the laws of motion, the laws of thermodynamics, and the laws of fluid dynamics. Only then can we accurately predict how friction will affect the motion of two objects. Furthermore, understanding the physics behind friction allows us to design better materials and machines that are more efficient and less prone to wear and tear.

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source: Phys.org