Define angle of repose. Deduce its relation with coefficient of static friction?

Define coefficient of limiting friction.

If angle of repose is phi , the coefficient of static friction between body and the plane is

A box is lying on an inclined plane if the box slides when the angle of inclination is 60^(@) then the coefficient of static friction of the box and the plane is?

A block is at rest on an inclined plane making an angle alpha with the horizontal . As the angle alpha of the incline is increased the block starts slipping when the angle of inclination becomes theta . The coefficient of static friction between the block and the surface of the inclined plane is or A body starts sliding down at an angle theta to the horizontal. Then the coefficient of friction is equal to

Define angle of dip. Deduce the relation connecting angle of dip and horizontal component of earth's magnetic field at a place.

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 inclined plane is 0.8. If the frictional force on the block is 10 N, the mass of the block is

A block of mass 2kg 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 10N, the mass of the block (in kg) is