Solve the below problem:
Q: Three hikers are shown crossing a footbridge. Knowing that the weights of the hikers at points C, D, and E are 200 lb, 175 lb, and 135 lb, respectively, determine
(a) The horizontal distance from A to the line of action of the resultant of the three weights when 3.3 a = ft,
(b) The value of a so that the loads on the bridge supports at A and B are equal.
