A diver with a mass of (68 kg) and a height of (1.4 m) can decrease her rotation rate in a flip from an initial rate of 2.

A diver with a mass of (68 kg) and a height of (1.4 m) can decrease her rotation rate in a flip from an initial rate of 2.5 rev/s (at point (c) in the figure) to a final rate of 1 rev in 2 s (at point (e)) by straightening her body. If we consider her straightened body to be a long rod rotating at her waist, find her final moment of inertia (point e), then find her initial moment of inertia (point c).

Final moment of inertia is calculated as follows;