At the 1984 olympics, the great diver greg louganis won one of his 10 gold medals for the reverse 3 1/2 somersault tuck dive. in the dive, louganis began his 3 1/2 turns with his body tucked in at a maximum height of approximately 2.0 m above the platform, which itself was 10.0 m above the water. he spun uniformly 3 1/2 times and straightened out his body just as he reached the water. a reasonable approximation is to model the diver as a thin uniform rod 2.0 m long when he is stretched out and as a uniform solid cylinder of diameter 0.75 m when he is tucked in.

what was louganis’s average angular speed as he fell toward the water with his body tucked in?

what was his angular speed just as he stretched out?

how much did louganis’s rotational kinetic energy change while extending his body if his mass was 75 kg?