Gnarls B.

asked • 03/23/18

Help needed on finding speed for circular motion

A radio controlled ariplane is suspended from a 0.80 m string. The plane revolves in a circle at a constant speed. The angle the string makes from the vertical is 60º. What is the speed of the plane?
I just know that centripetal force F= Tsin60 and the radius r=.80(sin60)

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