91. At the end of a thin rod of length l = 30 cm reinforced equal weights, one at each end. The rod with weights hovering around a horizontal axis passing through the point at the remote at d = 10 cm from one end of the rod. Be determined by the length L and period T of oscillations of the physical pendulum. Massa rod neglected.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)