Quote:
Originally Posted by DonRotolo
Inertia is the property of matter to resist acceleration due to its Mass. Things not moving tend to stay that way unless something pushes it. Weight and Mass are NOT the same, but we humans tend to confuse them, because they are measured in the same units (pounds, or kilograms, or...) These values are approximately equal on the earth's surface (due to Earth's gravity)
Does that help, or did I misunderstand the question?
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I believe he means moment of inertia, which is like inertia/mass for translational motion but instead for rotational. Unlike inertia, MoI changes based on the axis of rotation.