Задача 11151.

One end of the rod AB is hinged at point A. To the other end B is attached a weight of 50 N. The rod is kept in balance by the rope of the aircraft. Determine the reaction of the rope BC, if the angle a = 30 °.

A detailed solution with a brief description of the condition, formulas and laws used in the solution, the derivation of the formula and the answer.
If you have any questions about the solution, please write. I try to help.