What is maximum value of coefficient static friction ?

What is static friction ?

What is maximum value of poisson's ratio ?

A mass of 4 kg rests on a horizontal plane. The plane is gradually inclined until an angle theta=15^@ with the horizontal and the mass begins to slide. What is the coefficient of static friction between the block and the surface ?

A 50 gm box is placed on an inclined plane making an angle of 30^@ with the horizontal so that a gentle tapping causes the sliding of the box. Calculate the coefficient of static friction for the surfaces of the box and the inclined plane in contact.

If mu_k is the coefficient of kinetic friction, mu_r the coefficient of rolling friction and mu_s the coefficient of static friction, then

The maximum speed that can be achieved without skidding by a car on a circular unbanked road of radius R and coefficient of static friction p is

Write down the mathematical expression for coefficient of static friction in terms of angle of repose.

What is nature of surface if coefficient friction is zero.

A 50 kg block rests on a rough horizontal surface. A force of 200 N is applied on the body. The block acquires a speed of 4 m//s , starting from rest in 2 seconds. The value of coefficient of friction is

Write down the mathematical expression for coefficient of static friction.