A flywheel is a rotating mechanical device that is used to store rotational energy. Flywheels have an inertia called the moment of inertia and thus resist changes in rotational speed. The amount of energy stored in a flywheel is proportional to the square of its rotational speed.
Nevertheless, she was the tallest person in the world at the time. Yao Defen is considered the tallest living woman who was born in July 15, 1972 in Shucheng China . Yao measured 2.33 m (7 ft 8 in). Her gigantism is due to a tumor in her pituitary gland. The story of this woman giant began to spread rapidly after she went to see a doctor at the age of fifteen years for an illness.
While Yao held the Guinness World Record for the world's tallest living woman, the woman hailed at the tallest woman ever by Guinness is Zeng Jinlian of China. In 1982, she died age 17, measuring eight feet 1.75 inches. The world's tallest living man is Turkey's Sultan KÃ¶sen, at eight-foot-three.