Two forces of 400 N and 600 N act at an angle 60 to each other. Determine the resultant in magnitude and direction if (i) the forces have same sense, and (ii) the forces have different senses. Forces...

Two forces of 400 N and 600 N act at an angle 60 to each other. Determine the resultant in magnitude and direction if (i) the forces have same sense, and (ii) the forces have different senses.

Forces 7kN, 10kN, 10kN and 3kN, respectively act at one of the angular point of regular pentagon toward the other four points taken in order. Find their resultant completely.