A rectangular coil of length 0.12 m and width 0.1 m having 50 turns of wire is suspended vertically in a uniform magnetic field of strength 0.2 Weber / $m^2$ . The coil carries a current of 2A. if the plane of the coil is inclined at an angle of $30^\circ$ with the direction of the field, the torque required to keep coil in stable equilibrium will be: