A rectangular plate is acted upon by the force and couple shown. This system is to be replaced with a single equivalent force. The force acting at point B is FB = 48 N. A 240 mm D The value of a is 15 N 400 mm FB or B C Determine the value of a if the line of action of the equivalent force is to intersect line CD 300 mm to the right of D. 15 N LO 5 1 points eBook Print References A 2.80-kip force P is applied at point D of the cast-iron post shown. Replace that force with an equivalent force-couple system at the center A of the base section. 12 in. The magnitude of the equivalent force is ( The magnitude of the equivalent couple is ( kips)j + ( kip-in.)i + ( kips)k. kip-in.)j + ( kip-in.)k.