Task 10384.

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Bead mass m = 40 g fastened to weightless thread is rotated in a horizontal plane about a vertical axis at a speed n1 = 2 v / v. What makes a person a job, shortening the string with 60 cm to 20 cm?

Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.

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