Conditions for Equilibrium - Force Table.

part 1
200@0
100@120
150@180
90@270


uncertainty of mass @ 8gm 180 deg
5gm @ 270 deg

uncertainty of angle @ +-4 deg at 270 deg
+-3 deg at 180

part 2
200@0
100@120
174@210

uncertainty of mass 5gm 
uncertainty of angle 2deg

part 3

300 @ 150 deg
200 @ 233 deg
250 @ 300 deg
340 @ 42 deg

uncertainty of mass 15gm 
uncertainty of angle 2deg