Note that the normal forces are not the gravitational forces acting on the objects, but contact forces between the beam and the objects. (In this case, they are mathematically the same, due to the hor...Note that the normal forces are not the gravitational forces acting on the objects, but contact forces between the beam and the objects. (In this case, they are mathematically the same, due to the horizontal configuration of the beam and the fact that all objects are in static equilibrium.) The distances \(d_{1} \text { and } d_{2}\) are called the moment arms with respect to the pivot point for the forces \(\overrightarrow{\mathbf{N}}_{1} \text { and } \overrightarrow{\mathbf{N}}_{2}\), respec…
