Answer the following below

Calculate the net torque about point O for the three forces (F, =16.6 N, F,=18.9 N and F,=19.5 N) applied on the rod as shown in the figure, where 0=25.2. The rod and all forces are in the plane of the page. Assume the z-axis to be the axis perpendicular to the page. -12. 0 m- F1 1 3.00 m ! -4.00m 90. 0 F 3 F2 155 m.N, about the z-axis 306 m.N, about the z-axis -70.9 m.N, about the z-axis O 10.6 m.N, about the z-axisA string is wrapped around a thin-walled cylinder pulley of radius 11.1 cm and mass of l 1.2 kg. Ifthe string is pulled by a force that is tangent to a point on the rim 2 of the pulley, how much force is exerted to cause it to rotate at a constant rate of 3.41 rad/s ?The moment of inertia for thin-walled cylinder is I : mr2. O 38.2 N O 0.471 N O 344M 0 4.24M