A 500 kg crate is being pulled along a flat surface by two ropes. Rope A exerts a force of 400 N at an angle of 30 to the horizontal. Rope B exerts a force F'z at an angle of 45 to the horizontal. The coefficient of kinetic friction between the crate and the surface is 0.3. The crate is to be moved 100 meters along the horizontal in a straight line. Tasks: 1. Calculate the minimum force F'z that Rope B must exert to keep the crate moving at a constant velocity. 2. Determine the work done by the net force on the crate over the 100-meter displacement