A stone of mass 0.48 kg is attached to an extremely light thread, whose mass can be considered negligible, and swung around a fixed vertical axis Y so that the stone undergoes circular motion in a horizontal plane. The length of thread from the stone to the axis of rotation Y is L = 2.4 m and the thread makes an angle of 胃 = 71.0 掳 to the vertical.How to find radius of the circular motion?R/L = sin(71)
R = L sin(71)
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