Question

What is the moment of inertia of a pendulum with a mass of `7 kg` that is `1 m` from the pivot?

Answer 1

The moment of inertia is `=7kgm^2`

Explanation:

We assume that it is a point mass.

The moment of inertia is

`I=mr^2`

The mass is `m=7kg`

The distance is `r=1m`

The moment of inertia is

`I=mr^2=7*1^2=7kgm^2`