The three parallel bolting forces act on the circular plate (Figure 1).
Part A
If the force at A has a magnitude of Fa = 500 lb, determine the magnitudes of Fb and Fc such that the resultant force of the system Fr has a line of action that coincides with the y-axis. This requires ΣMx = 0 and ΣMy = 0.
Enter your answers numerically separated by a comma: