Question

What is the angle of friction between 2 surfaces in contact,if the coefficient of friction is 1/â3?

Answer 1

Coefficient of friction is not dependent on the angle between the surfaces. Its effective friction force ratio is proportional to the force. Since normal force is always perpendicular to the surface, the angle of surfaces is irrelevant. And if the coefficient of friction is 1, then it means that the frictional force is equal to the normal force.

According to this page, the angle of friction is given by this equation:

Arctangent of 1 is 45 degrees.

Between the two surfaces, the angle of friction angle between two surfaces (sometimes in any context, has another meaning) is expressed, although it is numerically defined:

 = Arctan (μ)

Where μs have limited coefficient of constant friction.

Here, arcton arc is tangent function, i.e. Arcton (μs) is acute angle, such as tan = μs

It can be defined in the following ways:

1. It is an angle that a fixed sloping plane made of a surface should be made with horizontal so that the body of the second surface just starts to glide.  is smaller than के for the small angle, before sliding and for any angle, it starts from sliding. More information: Sliding speed with an inclined plane

2. Consider the blocks placed on a fixed horizontal plane such that the surface of contact is two desired surfaces. Then,  angle is that the force required to pull the block in a particular horizontal direction is minimal, if the block is drawn to the angle with that horizontal direction.

Properties

The angle of friction is critically serious on the emergence of limited coefficient of static friction μs, the case is taking value for μs = 0 and the value is coming in the form of μs → ∞ as  / 2 = 900