a small body of mass m revolving in a horizontal circle with velocity V of a constant magnitude at the end of a cord of length L. As the body swings around its path, the cord sweeps over the surface of a cone. The cord makes an angle è with the vertical, so the radius of the circle in which the body moves is R=L sin è and the magnitude of the velocity V, equals V= 2ᴫr/T = 2ᴫLsin è/T where T is the period of the revolution of the motion, the time for one complete revolution. Find T
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