# Formula Of Inertia

by kckevo16
Tags: formula, inertia
 P: 2 Hey everyone! I love this site! Im doing a project on Inertia and I need to know the Formula. Does anyone know what it is?
 Mentor P: 40,278 You'll have to be a bit more specific than that!
 P: 567 The index of your textbook ... "Newton's first law"
P: 2

## Formula Of Inertia

F = Ma?
Mentor
P: 40,278
 Quote by kckevo16 F = Ma?
That's Newton's 2nd law.

Newton's First Law
 P: 83 Is there really a formula for intertia? Isn't it just mass? The tendency for a mass to remain at constant velocity/rest. Mass and/or inertia is like a measure of resistance in a change of velocity. So the higher the mass the more force you need to accelerate it at a certain rate.
 P: 10 Yes.. Inertia is just the property which defines the resistance the moving or a stable object offers towards the external applied force. as the mass of the object increases its inertia increase.. its not quantifiable...
PF Patron
Emeritus
P: 9,789
 Quote by sekar507 its not quantifiable
I have to disagree there; the inertia for a specific body is definitely quantifiable. A particle's inertia is simply it's mass, whereas one can express the inertia of an extended body as an inertia matrix. Either way, one can definitely quantify the inertia of a specified mass distribution.

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