Science
Period of a rotating star

Question Description

I’m studying for my Physics class and don’t understand how to answer this. Can you help me study?

The mass of a star is 1.83·1031 kg and it performs one rotation in 21.9 days. Find its new period (in /days) if the diameter suddenly shrinks to 0.37 times its present size. Assume a uniform mass distribution before and after.

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