A stick of mass density λ=8 kg/m rests on a disc of radius R = 20cm as shown in the figure. The stick makes an angle θ=37o with the horizontal and is tangent to the disc at its upper end. Friction exists at all points of contact and assume that it is large enough to keep the system at rest. Find the friction force (in Newton) between the ground and the disc. (take g  = 10  m/s2 )