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 :

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

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

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

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

A weight W rests on a rough horizontal plane,If the angle of friction is theta ,the least force that can move the body along the plane will be

A weight W rests on a rough horizontal plane,If the angle of friction is theta ,the least force that can move the body along the plane will be