Three stage lights are mounted on a pipe as shown. The lights at A and B each weigh 4.1 lb...

Three stage lights are mounted on a pipe as shown. The lights at A and B each weigh 4.1 lb, while the one at C weighs 3,5 lb. (a) If d= 25 in., determine the distance from D to the line of action ol the resultant of the weights of the three lights. (b) Determine the value of d so that the resultant of the weights passes through the midpoint of the pipe.