1. Given the following system of forces, determine the magnitude and direction of the resultant force: Force 1 - 30 lbs, at 10" Force 2 - 60 lbs, at 140' . . Force 3 - 80 lbs, at -150" Force 4- 20 lbs, at -55* 2. Find the resultant force for the system of forces given below: 40 50 lbs 2 20 30 lbs 70 lbs 3. In the system of forces given below, find the fourth force for equilibrium. * 30 lbs 50 lbs $ 156 70 bs