Is Energy Conserved on a Roller Coaster?
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Is Energy Conserved on a Roller Coaster?
Name: ______Due Date: 5/18/2012
Lab Partners: Click here to enter partner 1.
Introduction Energy conservation is an important concept in this unit on energy. For the introduction paragraph describe what conservation of energy is and briefly explain how it is going to be proven (or disproven) in the experiment.
Objective To determine if the Law of Conservation of Energy applies to a moving marble on a roller coaster track.
Hypothesis Click here to enter text.
Variables Independent Control
Dependent Constants
THINK ZONE:
To accomplish this task you will need to find the 2 types of energy at seven different points along the roller coaster track. So before beginning, think about what is needed to do this.
What 2 forms of energy are you going to use? ______
Formulas: ______
What data do you need to complete the ______equation? ______
Methods
Materials Click here to enter text.
Procedure 1. Gather all materials 2. 3.
[1] Is Energy Conserved on a Roller Coaster?
Results Mass of Marble: ______Convert to kg: ______Diameter of Marble: ______Convert to m: ______
Data Be sure to label the columns with the correct units. Carry all Calculations 4 decimal places.
Position Height of PG Time @ PG Velocity PE KE (METERS)
A Rest
B 5
C 25
D 43
E 63
F 81
G 103 I 125
Graph Graph the PE and the KE of the roller coaster.
Calculations
Discussion Paragraph 1 - one or two sentences explaining the lab. Accept or reject the hypothesis while citing specific data from the lab.
Paragraph 2 - Explain the energy transformation involved in the lab and again cite specific data. [2] Is Energy Conserved on a Roller Coaster?
Paragraph 3 - Explain what efficiency is and calculate the efficiency of the roller coaster.
[3]