Question

a 1.45 kg ball is suspended from a 0.80m string and swung in a horizontal circle at a constant speed such that the string makes an angle of 14 degrees with the vertical.

what is the tension in the spring
what is the speed of the ball.
the string tension is the hypotenuse of a force triangle formed by
... the tension , the weight of the ball , and the centripetal force

the centripetal force equals ... m g / tan(14ยบ) ... equals ... m v^2 / r

tension^2 = weight^2 + centripetal force^2

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