# Shared Flashcard Set

## Details

Chapter 10: Center of Gravity Questions
Chapter 10 Center of Gravity Questions
8
Physics
12/27/2011

Term
 Center of Gravity
Definition
 average position of weight
Term
 Center of mass
Definition
 average position of matter
Term
 Stable equilibrium
Definition
 when any displacement raises the center of gravity, CG
Term
 Why is a tight rope walker very stable with a long pole with weights
Definition
 the center of gravity can be pulled below the wire. It takes a lot of Energy to pull the CG above the wire so the tightrope walker is extremely stable)
Term
 To resist being toppled, why does a wrestler stand with his feet apart
Definition
 wide apart feet increase the support base
Term
 For an irregular shaped projectile. Its motion is made up of two parts. What are they?
Definition
 Projectile motion of its center of gravity, rotational motion around the center of gravity. Rotation around earth and revolution around the CG.
Term
 State the rule for toppling.
Definition
 If the CG of an object is above the area of support, the object will remain upright. If the CG extends outside the area of support the object will topple
Term
 Tell three ways to carry a pile of books easier than with one hand at your side.
Definition
 1. Hold them close to you in front or in a backpack. 2. Divide them and carry them with two arms. 3. Carry them on your head.
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