What is the moment of inertia of a pendulum with a mass of #8 kg# that is #6 m# from the pivot?
In the most simple form, this is an equation that you may use for this type of problem (simple pendulum):
The following resources may help you further understand the concepts:
Best of luck in your studies!
EDIT: the following response to the same question (with different values) has a lovely diagram which may further help enhance your understanding.