It's what we "know" that hurts! The Newton is a unit of force. While friction is a force, the coefficient of friction is not.BigMann said:I know that the coefficient of friction is Newtons
The coefficient of friction is the ratio of two forces, the force of friction divided by the normal force. It has no units; it is a pure number.BigMann said:maybe I'm not understanding the units of the coefficient of friction. Could you explain to me what they are?
This does not mean much out of context. By minimum value of the coefficient of friction I assume you mean the minimum value required to achieve some condition, such as the minimum value required to keep a block from sliding down an inclined plane or to keep a car going around a curve from skidding. There is no single equation for this. It comes from figuring out how much frictional force is required to acomplish something and dividing that required force by the normal force in the problem.BigMann said:stupid question because I forgot the equation
What is the equation for the minimum value of the coefficient of friction?
is it m(v^2/r) or v^2/gr
Friction is the resistance between two surfaces when they are in contact with each other. It affects objects by slowing them down or preventing them from moving altogether.
The amount of friction between two surfaces can be affected by the type of material, the roughness of the surfaces, the weight or pressure applied, and the presence of lubricants.
Friction can be reduced by using lubricants, such as oil or grease, to create a slippery layer between the two surfaces. Smooth or polished surfaces can also reduce friction as they have less surface roughness.
Friction is present in many everyday activities, such as walking, riding a bike, and driving a car. It is also responsible for the grip between tires and the road, the movement of gears in machines, and the use of brakes to slow down or stop moving objects.
Friction can work against energy efficiency as it can cause machines to use more energy to overcome the resistance between moving parts. However, friction can also be harnessed in some cases, such as in brake systems, to convert kinetic energy into heat energy and slow down moving objects.