Ch6_CaspertS

toc

= __Lesson 1: Basic Terminology and Concepts__ = Motion can be looked at through the perspective of work and energy. Work is when a force acts upon an object to cause a displacement to that particular objects. There are three parts to it: force, displacement, and cause. Work is equal to "force*displacement*cos(theta)".
 * Looking at It From A Whole Different World**

To do the calculations to find work, you must know three things. They are force, displacement, and the angle between force and displacement. By multiplying these three factors by each other, you calculated what work is equal too.
 * The Math Behind the Work**

=__Lesson 2: The Work-Energy Relationship__= Forces can be either internal forces (gravity, magnetic, electrical, spring) or external forces (applied, normal, tension, friction). The only time the total mechanical energy can be changed is when work is done upon an object by an external force. Total mechanical energy is equal to (KE+PE). Because external forces can change the total mechanical energy, they can be referred to as nonconservative forces. And because internal forces can change the form of energy, they are sometimes referred to as conservative forces. I was able to get most of the practice problems correct.
 * Are the Forces In or Out?**