Question

A fly wheel is so constructed that almost whole of its mass is concentrated at its rim, because:

• A. It increases the moment of inertia of the fly-wheel
• B. It decreases the moment of inertia of the fly-wheel
• C. It increases the speed of the fly-wheel
• D. It increases the power of the fly-wheel

Answer 1

The correct option is A It increases the moment of inertia of the fly-wheel

Moment of inertia (I) vertex with distance $\left(r^2\right)$ of man.

So, when almost all it's man is concentrated at it's him,

It increases the moment of inertia of the wheel.