The correct answer is 157 Nm. I need the work step by step with formulas, and derived formulas, with all unit conversions shown if necessary.

+z 7 kg 5 m 370 4 kg 3 m ty A 7.00-kg mass and a 4.00-kg mass are mounted on a spindle that is free to turn about the x axis as shown. Assume the mass of the arms and the spindle to be negligible. The magnitude of the resultant torque is approximately 82.2 N.m. . 157 N.m. 225 N.m. 392 N.m. 461 N.m