9-6 Tutorial: Torque and statics E. A second force F is added to the rod as shown. What must be the magnitude of this force in order for the rod to be in equilibrium? 3 m mg 2 m F. The pulley shown is horizontal and has a radius of 0.5 m. It is fixed in place and can rotate about its midpoint. Two people are pulling on the rope that goes around the pulley with forces F = 15 N and F - 20 N. Which equation can be used to calculate the net torque acting on the F1 pulley around its center? a. 1 = Fir b. 1 = Fri C. There's no advantage to picking one or the other. The torque caused by Fi is (circle one): negative zero positive The torque caused by Fa is (circle one) negative zero positive G. Use your answers to F above to calculate the net torque acting on the pulley around its center. Don't forget about the sign