Solution of task 2.1.8 from the collection of Kepe OE

Solution of task 2.1.8 from the collection of Kepe OE

2.1.8
A pair of forces (F1, F´1) and force F act on the arch AB.
Determine the sum of their moments with respect to point A if the forces F = 4H, F1 = 2H, radius r = 2 m, shoulder CD = 1.5 m.
(Answer -11.0)

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