Physics

A powered model airplane of mass 1.7 kg is tied to a ceiling with string and allowed to fly at speed 0.21 m/s in a circular path of radius 0.86 m while suspended by the string which makes a constant angle with respect to the vertical.
(a)
What is the angle, in degrees, that the string takes such that the above is true?
(b)
What is the tension in the string, in N?

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    posted by NNON

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