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Section 10 Rotational Equilibrium
Section 10 Rotational Equilibrium Vocabulary Cards
6
Physics
11th Grade
08/14/2011

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Term
lever arm
Definition
The perpendicular distance between an axis and the line of action of a force that tends to produce rotation about that axis
Term
center of gravity
Definition
The point at the center of an object's weight distribution, where the force of gravity can be considered to act. Abbreviated CG
Term
neutral equilibrium
Definition
The state of an object balanced so that any small movement neither raises nor lowers its center of gravity
Term
stable equilibrium
Definition
The state of an object balanced so that any small displacement or rotation raises its center of gravity
Term
torque
Definition
The rotational analog of force; the product of force and the lever arm (measured in newton-meters). Torque tends to produce rotational acceleration
Term
unstable equilibrium
Definition
The state of an object balanced so that any small displacement or rotation lowers its center of gravity
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