Calculate the moment of inertia of the pendulum Oberbeck, if the cargo weight of 700 g dropped from a height of 1 m in a time of 5.8 seconds. The radius of the pulley 42 mm, acceleration due to gravity 9.81 m / s ^ 2. How much time will change the inertia of the pendulum when removing two rods with weights? The mass of the weight 145 grams, the weight of the rod 280 g, length 0.4 m. Consider the case where the goods are initially at the ends of the rods.
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