A man having a weight of 150 lb crouches down on the end of a diving board as shown In t...

A man having a weight of 150 lb crouches down on the end of a diving board as shown In this position the radius of gyration about his center of gravity is k_G = 1.2 ft. While holding this position at θ = 0°, he rotates about his toes at A until he loses contact with the board when θ = 90°. If he remains rigid, determine approximately how many revolutions he makes before striking the water after falling 30 ft.