The moment of inertia of an object about ... level to fill the Three Gorges Reservoir would also increase Earth’s moment of inertia and thus slow its rotation — a small shift of about ...

Here's a wonderful source that breaks it down further: Three ... object's mass on the Earth relative to its axis of rotation will change its moment of inertia, although most shifts are too small ...

If you’ve watched gymnastics in Rio, you’ve probably noticed that the gymnasts are pretty small ... The higher the moment of inertia, the harder it is to rotate the object.

Sometimes referred to as the moment of inertia, rotational inertia describes an object’s resistance to a change in its rotation. You experience and observe rotational inertia in many everyday ...