Section 07: Energy

Goal: To demonstrate that work is a transfer of energy and that work can be done with reduced force using simple machines.

Objectives:

Students will be able to:

- define work done in terms of the force applied and the distance moved.

- define the amount of power produced in terms of the work and the time.

- identify and define types of energy including: chemical, thermal, mechanical, nuclear, electrical and radiant.

- define work in terms of energy.

- distinguish among mechanical energy, gravitational and elastic potential energy, and kinetic energy.

- give examples of situations in which (a) the gravitational potential energy changes and (b) it does not even though something is moved.

- describe how the kinetic energy of an object depends upon the speed of the object.

- state the law of conservation of energy.

- define and describe the function of a lever, pulley, inclined plane and be able to determine the mechanical advantage and efficiency of each.

- explain why no machine can have an efficiency of 100%

- Calculate work, power, kinetic energy, potential energy, actual and ideal mechanical advantage.

- Use the conservation of energy concepts to calculate the transformation of energy in kinematic problems.

Labs: Inclined Plane Lab, Pulley Lab, Lever Lab, Coefficient of Restitution,Hooke's Law to Elastic PE, Torsional PE to KE, & Gravitational PE to KE.

Lecture Notes are in .pdf format below.

Worksheets: See below list.

Conceptual Development Worksheets ("Conceptual Development" will be in the title).

Reading Assignment: Chapter 7

Extra Credit: None at this time, but if you have any ideas, write up a proposal and I'll review it for consideration

Class Updates/Test/Quiz Schedule: Refer to your SOE for the dates.