Question

)The force of riction:​

Answer 1

Answer:

f=uN

Explanation:

f= friction force

u=coefficient of friction

N=normal force

Answer 2

Friction is the force that opposes the relative motion of sliding solid surfaces, fluid layers, and material components. Friction can take numerous forms:

• The force that resists the relative lateral motion of two solid surfaces in contact is called dry friction. Static friction ("stiction") between non-moving surfaces and kinetic friction between moving surfaces are the two types of dry friction. Dry friction, with the exception of atomic or molecular friction, is caused by the interaction of surface characteristics called asperities.
• The friction between layers of a viscous fluid that are moving relative to one other is known as fluid friction.
• Lubricated friction is a type of fluid friction in which two solid surfaces are separated by a lubricating fluid.
• Skin friction is a component of drag, which is the force that opposes fluid motion across a body's surface.