@ACuriousMind A homogeneous rod AB of length L and mass m is placed in equilibrium on a pin placed at the point O, located at a distance AO = L/6 from the end A. At the end A of the rod there is a body of negligible dimensions and mass m_A is welded, while at extreme B a body of negligible dimensions and mass m_B=m/6 is welded. The rod is horizontal.
a) Calculate the m_A value for which the rod remains in equilibrium under the action of the weight force;
The rod is then constrained to a vertical axis z passing through O, around which it can rotate with negligible friction. A constant moment…