1. The problem statement, all variables and given/known data I'm given a table of vectors A, B, and C of mass, magnitude, direction, x component, and the y component. The weights of 3 masses will apply tensions to 3 cables on a force table, the object is in translational equilibrium. Given: Vector A: m=0.2, magnitude=?, direction 30 degrees, x comp=?, y comp=? Vector B: m=0.2, magnitude=?, direction 120 degrees, x comp=?, y comp=? Vector C: m=?, magnitude=?, direction 30 degrees, x comp=?, y comp=? or here http://chemphys.calumet.purdue.edu/~napora/classes/Phys152/labs/Lab02--ForceTable.pdf [Broken] pg 3 2. Relevant equations [itex]\Sigma[/itex]F=0 Magnitude = sqrt(a^2+b^2) 3. The attempt at a solution For the magnitude of vectos A and B I just multiplied by g (9.8), for x component: i did cos(theta)*magnitude, and y comp: sin(theta)*magnitude. For vector C, for x comp I did x-comp of vector A + Vector B + vector C = 0...and same for y component. for direction i did arctan(y comp/ x comp). and the magnitude I did sqrt[(magnitude of vector A)^2 + (magnitude of vector B)^2]. So I got Vector A: m=0.2, magnitude=1.96, direction 30 degrees, x comp=1.7, y comp=.98 Vector B: m=0.2, magnitude=1.96, direction 120 degrees, x comp=-.98, y comp=1.7 Vector C: m=.28, magnitude=2.77, direction 255 degrees, x comp=-.72, y comp=-2.68 My numbers did not match up with the lab I did, are my calculations wrong? if not maybe it was the lab.