At the ends of weightless rod length l = 1,7 m, oscillating in a vertical plane parallel to the horizontal axis perpendicular to the rod and extending at a distance r = 20 cm from the upper end thereof, strengthened loads m1 = 0,5 kg at the upper and m2 = 1, 5 kg at the lower ends. The angular oscillation amplitude of 2 degrees. Be determined by the length of the physical pendulum and its kinetic and potential energy, and the phase of the oscillation at time t = 1,5 s, measured from the moment of passing the equilibrium position of the pendulum.

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