Physics I- (11-13) Study Guide

Physics I- (11-13) Study Guide

Center of Gravity

The point at which ALL the weight of any object seems to be concentrated

When a meter stick is placed at its natural balance point (NBP) on a fulcrum, how could a larger weight balance a small weight?

A large weight could balance a small weight if the larger weight is closer to the fulcrum and the smaller weight is farther from the fulcrum.

Torque

A rotational (twisting) force that causes an object to rotate around an axis

Law of Torques

In a balanced system, the sum of all the torques will be zero

Natural Balance Point

The point at which all the weight of an object is located

What is the point where the force of gravity acts on an object called?

The center of gravity

How would you describe the center of an object

THe point of an object which falls along a down line passing through the center of the Earth

What direction is down

toward the center of the Earth

Write an operational definition of the center of an object using what you can observe about gravity

The center of an object is that point in the object that falls along a down line