What moment of inertia does the Oberbeck pendulum have if, under the action of a weight of 760 g, it spins with an angular acceleration of 2.07 c^-2? Pulley radius 42 mm, free fall acceleration 9.81 m/s^2. What is the length of the rod if the moment of inertia due to the rods is 40 times the moment of inertia of the pendulum? Mass of one rod 280 g.

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