Mechanics question, please help

4. A parking gate (uniform beam) of mass M = 1.00 kg (1 = _ML2) is hinged to a wall and is free to rotate about one end (o). 25.0 N Ny = 3. 86 N 300 3. 86 N NX = F 24. 70 N LL 3. 86 pivot 3.00 m point mg 4.00 m a. Calculate the net torque on the beam shown about an axis through o, perpendicular to the figure. [ 4 ]