Asked by Noah

A christmas bulb of mass W is swung in a vertical circle on a cord length Y. What minimum speed v needed at the top of the circle to keep the cord taut?
Answered by drwls
v^2/Y = g
v = sqrt(Y*g)

W does not matter.
Answered by Jake
A 55kg Man is on a merry go round and is 15m from the center. It takes 4.5 seconds for 1 complete trip. What is ac and fc?
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