Angle Of Friction

Inside a uniformly accelerating thin-walled spherical shell of radius R which is rolling on horizontal surface there is a small body slipping around Angle of friction between body and inner surface of sphere is 23^(@) which of the following can be the acceleration a of the center of sphere to ensure that the small body stays at R//2 distance from the surface?

The angle between the resultant contact force and the normal force exerted by a body on the other is called the angle of friction. Show that it lamda be the angle of friction and mu the coefficient of static friction. lamdaletan^-1mu .

If force F is gradually increased from zero to 50 N , tehn (a) find the minimum contact force, (b) find the maximum value of angle of friction when F = 30 N , (d) find the angle of friction when the block is moving with constant velocity and ( e) sketch a graph between friction and applied force.

Pulling force making an angle theta to the horizontal is applied on a block of weight W placed on a horizontal table. If the angle of friction is alpha , then the magnitude of force is alpha , then the magnitude of force required to move the body is equal to

Pushing force making an angle theta to the horizontal is applied on a block of weight W placed on a horizontal table . If the angle of friction is phi , magnitude of force required to move the body is equal to :

The force required to just move a body up an inclined plane is double the force the required prevent it from sliding down. If phi is angle of friction and theta is the angle which incline makes with the horizontal then,

A block of mass m is placed at rest on a horizontal rought surface with angle of friction phi . The block is pulley with a force F at an angle theta with the horizontal. The minimum value of F required to move the block is

If a pushing force making an angle alpha with horizontal is applied on a block of mass m placed on horizontal table and angle of friction is beta , then minimum magnitude of force required to move the block is