What is static friction ?

Fill in the blanks. Sliding friction is ………………… than the static friction.

A body of mass 2 kg rests on a rough inclined plane making an angle of 30^(@) with the horizontal. The coefficient of static friction between the block and the plane is 0.7. The frictional force on the block is :

A block rests on a rough inclined plane making an angle of 30 ^@ with the horizontal . The coefficient of static friction between the block and the plane is 0.8 If the frictional force on the block is 10 N the mass of the block is " "(g=10 ms ^(-2))

A block kept on a rough surface starts sliding when the inclination of the surface is theta with respect to the horizontal . The coefficient of static friction between the block and the surface is

What is friction?

What is rolling friction?