Task id6442
A platform in the form of a disk with a radius R=1 m rotates by inertia with a frequency n1=6 rpm. A man stands on the edge of the platform, whose mass is 80 kg. At what frequency n will the platform rotate if a person moves to its center? The moment of inertia J of the platform is 120 kg•m2. The moment of inertia of a person is calculated as for a material point.
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