Static Friction

What is work done by friction?

Does friction do work on an inclined plane?

How does friction affect inclined planes?

How many types of friction are there? Explain each of them.

How does friction affect inclined plane?

Explain static friction and sliding friction on the basis of limiting value.

The limiting value of static friction is always greater than _____ friction.

The limiting value of static friction is always greater than sliding friction.

Define limiting friction.

Limiting value of the static friction is the value of friction when the body is just about to move.

The maximum magnitude of static frictional force does not depend on how an object is kept on a surface.

Give examples of practical application of static friction.

The limiting friction depends on the _____ of surfaces in contact with each other.

Find the maximum value of $(\mathrm{M}/\mathrm{m})$ in the situation shown in figure so that the system remains at rest. Friction coefficient of both the contact is $\mu ,$ string is massless and pulley is frictionless.

Match the following

Match the following

Arrange the following in the increasing order:
Let a marble roll on the following surfaces. Arrange the choice of the material such that a marble moving over it covers a greater distance. Cotton cloth, glass plate, paper, cardboard, silver plate.

The heavier the object, the _____ (greater/lesser) is the friction.

It is difficult to walk on the marble floor when soap water is spilt over it because soap water _____ friction. (increases/decreases)

If $\mu =3/4$ then what will be frictional force (shear force) acting between the block and inclined plane when $\theta ={30}^o$.