On the arch ABC are a couple of forces (F1, F'1) and the force F = 2 N. Determine the sum of the moments about point B, if the force F1 = 3 H, the radius r = 1 m, shoulder DE = 1,2 m, the angle a = 45 °.

you will receive a solution to the problem 2.1.7 (Chapter 1 - statics topic - 2.1: Moment of a force about a point. A moment of couple) in theoretical mechanics from the collection of short tasks Kep OE, H. A. Viba, OP Grapis, JA Svetinysh and others. Publishing Moscow / Graduate School / 1989, 2009, 2012. The task is made in the format word (typed or hand-written decision in a Word) or in manuscript form in the format gif, packed to the archive zip (open on any PC) .After checking the solutions would be very grateful if you leave your positive feedback.