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Böge 92 An arc lamp with a weight force FG = 600 N is mounted at point A so that it can rotate, as shown in the sketch, and is supported by a rope at B. The distances are l1 = 3 m, l2 = 2.7 m, l3 = 1 m and l4 = 1.2 m. We are looking for: a) the tensile force FB in the rope, b) the supporting force in bearing A, c) the angle at which the force FA acts to the horizontal. Image quote from the collection of exercises in technical mechanics, 23rd, revised and expanded edition, Springer Vieweg © Springer Fachmedien Wiesbaden 2017 Alfred Böge, Gert Böge, Wolfgang Böge Illustrations: Graphics & Text Studio Dr. Wolfgang Zettlmeier, Barbing Klementz Publishing Services, Freiburg lernflix.at offers individual online tutoring in mechanics and statics. for more info visit me at https://lernflix.at/ The force system, also known as the force system, is a term from mechanics that describes a system of mechanical interactions between bodies. When analyzing force systems, it can be a matter of calculating unknown forces in the system, converting the force system into a simpler, equivalent one, which makes further analysis easier, or determining the accelerations of the bodies involved caused by the forces. The analysis of general force systems is not possible without the concept of torque. The magnitude and direction angle of the resultant are calculated in the same way as in the first basic task. This also gives clarity about the displacement effect of the force system. However, the resultant must also have the same rotational effect as the force system. Its position depends on this. This knowledge is defined in the moment theorem. Mechanics tutoring in Villach