This problem again is a simple matter of plugging the values into the center of mass formula. We must make sure however to get all mass values into Newtons before solving.
x = (W1x1 + W2x2 + ....) / (W1 + W2 +....) x = (1.96 N)(7.8 m) + (0.044 N)(3.9 m) / (2.004 N)
x = 7.7 m
