Chapter 10 and 11

Terms	Definitions
Center of Gravity	The point located at an object's average position of weight
Center of Mass	The point located at an object's average position of mass
Rule for Toppling	If the CG is not over the support base, the object will topple.
Stable Equilibrium	When an object is balanced so that any displacement lowers the CG
Unstable Equilibrium	When an object is balanced so that any displacement raises the CG
Neutral Equilibrium	When an object is balanced so that any displacement neither raises nor lowers the CG
What is the natural tendency for the CG?	To find the lowest position possible.
Torque	A perpendicular force applied at a distance from the axis to cause an object to rotate
Net Torque causes _______________.	Rotation
Rotational Inertia	An object rotating about an axis tends to keep rotating about that axis
What is required to change the rotational state of motion?	A net Torque
On what does rotational inertia depend?	(1) Mass (2) distance of mass from the axis
Angular Momentum	Resistance to change in rotational motion
Law of Conservation of Angular Momentum	In the absence of an external (net) torque, the angular momentum of a system will remain constant.

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