A traffic-signal pole may be supported in the three ways shown. In Figure (a) there is a horizontal and a vertical component of the force at A, but no moment.

In Figure (b) there is a horizontal and a vertical component of the force at A, and also a moment provided at point A. In Figure (c) there is a horizontal and a vertical component of the force at A, and also a moment provided at point A, and in addition to that, the tension in cable BC is known to be 1950 N. Determine the magnitude of the force at point A for a) (Problem 3), b) (Problem 4), and c)(Problem 5). Enter the answer in N. When entering the answer, enter just the value (do not enter the units).