94. A man sits in the center of the bench Zhukovsky, co

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Uploaded: 04.08.2014
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94. A man sits in the center of the bench Zhukovsky, coasting about a fixed vertical axis with the frequency n1 = 30 min-1. The outstretched hand in his hands he holds but Gira mass m = 5 kg each. The distance from each weight to the rotational axis l1 = 60 cm. The total moment of inertia with respect to human rights and the bench rotation axis J0 = 2 kg ∙ m2. Determine: 1) the frequency of rotation n2 bench with a man; 2) And what kind of work will make a man, if he will press the dumbbells to itself so that the distance of each weight from the axis becomes equal to l2 = 20 cm.

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)


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