Physics 1  Chapter 8
Energy
Terms & Objectives
Note: The following terms and objectives are based on the Indiana Standards 2000 for Physics 1. You may download the complete physics standards by clicking here, or view the standards relevant to Chapter 8  Energy here.
New Terms in Chapter 8:
actual mechanical advantage

Joule

power

efficiency

gravitational potential energy

theoretical mechanical advantage

energy

Watt

kinetic energy

Law of Conservation of Energy

mechanical energy

potential energy

fulcrum


work

Chapter 8 Objectives:
When you have completed Chapter 8, you should be able to:
 Work & Power
 ... calculate work done by a
constant force acting:
 ... define power and calculate
power given work and time.
 Work & Kinetic Energy
 ... recognize kinetic energy as energy
of motion and calculate the kinetic energy of an object.
 ... discuss the relation
between work done by the net force on an object and the
object's kinetic energy, and use this relation to answer
questions and solve problems, such as:
 ... recognize work and energy
as scalar quantities.
 Potential Energy
 ... recognize potential energy as energy due to position or
arrangement.
 ... distinguish between conservative
and nonconservative forces.
 ... calculate the gravitational potential energy of an
object near the surface of the earth.
 Conservation of Energy
 ... state the Law of Conservation of Energy.
 ... use the Law of Conservation of Energy to explain conceptually how
energy is transformed from one form to another in simple
situations such as:
 a falling object.
 an object thrown into the air.
 a simple pendulum.
 ... apply the Law of Conservation of Energy to problems involving free fall, elastic
collisions, etc.
 Simple Machines
 ... apply the Law of Conservation of Energy to the
operation of simple machines such as:
 an inclined plane.
 a lever (3 types).
 a single or multiple pulley.
 ... calculate the mechanical advantage of a simple machine,
and distinguish between theoretical and actual mechanical
advantage.
 ... calculate the efficiency of a simple machine.
 ... explain, in terms of conservation of energy, why the
efficiency of a machine cannot exceed 100%  in other words,
explain why a "perpetualmotion machine" cannot be built.
Possible Misconceptions to Correct:
Do you believe that any of the following statements are true? They
AREN'T! When you finish Chapter 8, you should
understand that each of these statements is FALSE,
and WHY.
last update November 23, 2007 by JL Stanbrough