A block of `3 kg` rests in limiting equilibrium on an inclined plane of inclination `30^(@)`. If the plane is raised to an inclination `60^(@)` , the force along the plane required to support it is

A body of mass 8kg is in limiting equilibrium over an inclined plane of inclination 30^@ . If the inclination is made 60^@ , the minimum force required to prevent the body from sliding down is (g = 10ms^(-2))

A body of mass 8kg is in limiting equi'ibrium over an inclined plane of inclination 30^(@. If the inclination is made 60^(@), the minimum force required to prevent the body from sliding down is (g = 10 ms ^(-2))

A block is in limiting equilibrium on an inclined plane of angle theeta ,Then ,the coefficient of friction is :