Three forces are applied to a wheel of radius 0.350 m, as shown in Fig. E10.4 - 10.4

10.4 • Three forces are applied to a wheel of radius 0.350 m, as shown in Fig. E10.4. One force is perpendicular to the rim, one is tangent to it, and the other one makes a 40.0° angle with the radius. What is the net torque on the wheel due to these three forces for an axis perpendicular to the wheel and passing through its center?
Problem from University Physics with Modern Physics