Question

Problem 15

Answer 1

Given information

A diver has no initial rotation.

Step-by-step explanation

Step 1.

When the diver leaves the board she needs an angular momentum as according to the law of conservation of angular momentum, the total momentum must be conserved.

According to this law, the total momentum of an isolated system can only be conserved when there is no external torque acting on it, i.e. the system must be closed.