Question
Physics Question on System of Particles & Rotational Motion
A diver in a swimming pool bends his head before diving, because it:
A
decreases his moment of inertia
B
decreases his angular velocity
C
increases his moment of inertia
D
increases his linear velocity
Answer
decreases his moment of inertia
Explanation
Solution
When the diver bends his head, it decreases his moment of inertia. It results an increase in angular speed. Hence, it provides the diver more spin for fulfillers diver.