A small ball of mass M is attached to the end of a uniform rod of equal mass M and length L that is pivoted at the top (Fig. P15.51)
(a) Determine the tensions in the rod at the pivot and at the point P when the system is stationary.
(b) Calculate the period of oscillation for small displacements from equilibrium, and determine this period for L = 2.00 m. (Suggestions: Model the object at the end of the rod as a particle and use Eq. 15.28.)