Question

A diver goes from a layout position (full extension) into a tuck position (knees to chest) in mid-air.

Which of the following describes the change in angular velocity over this period?

Select one:

a. It increases

b. It decreases

c. It does not change

Answer 1

Angular velocity of the diver increases as he goes from layout position to tuck position.

Option a) It increases,  is the right answer

This can be proved with the help of angular momentum conservation.

Therefore,

The subscript 1 denotes the respective quantity in the layout position and The subscript 2 denotes the respective quantity in the tuck position.