Problem: A small rock is tied to a light string set it motion in a horizontal circle with constant speed. The string is 8.00 m long and makes a constant angle of 36.9° with the vertical direction. The tension in the string is 6.20 N.What is the radius r of the circular path of the rock?

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A small rock is tied to a light string set it motion in a horizontal circle with constant speed. The string is 8.00 m long and makes a constant angle of 36.9° with the vertical direction. The tension in the string is 6.20 N.

What is the radius r of the circular path of the rock?