Question on an ice rink two skaters of equal mass grab, Ask an Expert

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Question: On an ice rink two skaters of equal mass grab hands and spin in a mutual circle once every 2.7s.

Part A: If we assume their arms are each 0.85m long and their individual masses are 55.0kg, how hard are they pulling on one another?

I need help to find how hard are they pulling on one another.

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