Question

What is the moment of inertia of a pendulum with a mass of `7 kg` that is `2 m` from the pivot?

Answer 1

`28\ kg\ m^2`

Explanation:

Our moment of inertia can be defined as `I = mr^2`.
With only a single point mass, this is immensely easy to determine:
`I = (7\ kg) * (2\ m)^2 = 28\ kg\ m^2`