Question

What is the moment of inertia of a pendulum with a mass of `9 kg` that is `9 m` from the pivot?

Answer 1

The moment of inertia is `=729kgm^2`

Explanation:

The mass of the pendulum is `m=9kg`

The distance from the pivot is `r=9m`

The moment of inertia is

`I=mr^2=9*9^2=729kgm^2`