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All lab work should be completed in your course notebook and be recorded on the right side of the open notebook. If you come to the end of the page, you must of course turn the page over and continue writing on the back of the page on the right side of the page of the open notebook. Any accompanying sheets must be taped, glued, stapled or somehow attached to the lab notebook; scotch tape is always available in the room.

Scoring Rubrics for each lab are available online. These will also be distributed in class a couple days prior to notebook collection. View:

Scoring Rubric (not yet ready)



Lab E1:  Push the Plow

Question: 
What is the effect of varying the release location of a marble along an incline upon the distance which the marble drives a paper plow along a level table? Can an equation be written which describes the effect (presuming that there is one)?

Purpose: 
To determine the effect of the release location (distance from the bottom) of a marble along an incline upon the distance which a paper plow is driven along the level table;  and to determine a mathematical equation which describes the relationship between these two variables.

A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion of Results.  The Data section should include a diagram or sketch of the situation.  The strategic variables being measured or investigated should be identified on the diagram. A table of collected data should be included;  columns should be labeled and units identified.  A plot of the two measured quantities should be constructed and sketched;  linear regression or power regression should be performed and statistical information (e.g., slope, y-intercept, and regression constant) should be reported.  The Conclusion/Discussion should answer the questions posed in the Purpose and discuss the evidence which supports such answers.






Lab E2: It's All Uphill

Question: 
What effect does varying the angle of incline have upon the force needed to pull a cart up a hill at a constant speed to the same height?  What effect does a varying incline angle have upon the work done?

Purpose: 
To determine the effect of the angle of incline upon the force needed and upon the work done when pulling a cart up an incline to the same height at a constant speed.

A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion of Results.  The Data section should include the provided table and graphs.  A single sample calculation of the work should be shown in an organized manner. The Conclusion/Discussion should answer both questions posed in the Purpose and reference specific details from the data and graphs which provide the evidence for such a Conclusion; the link between the evidence and the conclusion should be clearly explained.








Lab E3: Work-Kinetic Energy

Question:
What is the relationship between the work done upon a cart and the kinetic energy change of the cart as it is pulled along a level surface by a horizontal force?

Purpose: 
To determine the mathematical relationship between or equation relating the work done upon a cart and the kinetic energy change of the cart as it is pulled along a level surface.

A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion of Results.  The Data section should include the provided table of data.  A sample calculation should be provided for each type of calculation; work should be clear and labeled. The Conclusion/Discussion should include a mathematical statement or equation which relates the work done upon the cart to the kinetic energy change of the cart.  Evidence supporting the statement should be provided.  An error analysis should be conducted.







Lab E4: Energy on an Incline

Question:
What is the total amount of mechanical energy for a cart moving along an incline plane at five different locations?  How do the results compare to the expected results?

Purpose: 
To determine the total amount of mechanical energy of a cart on an inclined plane at 5 different positions and to compare the results to the expected results.

A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion.  The Data section should include the provided table.  Work must be shown for the KE, PE and TME calculations. The energy bar charts should be completed.  The Conclusion/Discussion should include a comparison of the total energy at the five positions and a generalization about the principle which the data support.  An error analysis should be conducted in which the expectations are discussed; the degree to which the data align with the expectations should be described. Averaging and percent differences should be used.






Lab E5: Spring Into Action

Question:
What is the experimental evidence that mechanical energy is conserved for a mass vibrating on a spring? And how is the energy distributed between forms as the mass is located at various positions during its up-and-down cycle.

Purpose: 
To collect and present the experimental evidence that shows that mechanical energy is conserved for a mass vibrating on a spring and to describe how the mechanical energy is distributed among its various forms for various locations in the up-and-down cycle.

A complete lab write-up includes a Title, a Purpose, a Data section, a Conclusion/Discussion.  The Data section should include a taped-in print-out of the energy graph. The Conclusion/Discussion  should  include a paragraph in which the evidence for mechanical energy conservation is presented logically and clearly. Specific evidence should be identified in this paragraph. There should also be a paragraph (or ore) in which five locations during the mass-spring cycle are related to the relative amount of PEgrav, PEelastic, and KE are discussed; the changes (increases and decreases) in the various forms in moving from one location to another location should be discussed. The five locations are the highest point, the lowest point, the middle point and two points between middle and the upper and lower extreme. The discussion will be improved by a diagram of a vibrating spring with the five locations labeled with a letter.







Lab E6: Stopping Distance

Question:
What is the mathematical relationship between the stopping distance of a car and the initial speed of the car before braking?

Purpose: 
To determine the mathematical relationship (i.e., equation) relating the stopping distance of a car and the initial speed of the car before braking.

A complete lab write-up includes a Title, a Purpose, a Data section, a Conclusion and a Discussion of Results.  The Data section should organize the collected data in a table with labeled column headings and units. A plot of stopping distance versus speed should be included;  linear or power regression should be performed and the results (equation, statistical information, etc.) should be reported. The Conclusion should answer the question posed in the Purpose.  The Discussion of Results section should use theoretical considerations to discuss the expected relationship; the degree to which the experimental results match the theoretically predicted results should be discussed.







Lab E7: Energy of a Pendulum

Question:
What is the total amount of mechanical energy for a pendulum bob at three different locations along its path?  How do the results compare to the expected results?

Purpose: 
To determine the total amount of mechanical energy of a pendulum bob at three different positions along its trajectory and to compare the results to the expected results.

A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion of Results.  The data section should provide a graphic labeling the three locations in the trajectory of the bob which were analyzed. It should also include two tables of data - one for collected data and one for calculated data. The tables should have a row and column format; column headings should be clearly stated; units should be provided; work should be clearly shown for all calculated data.  The Conclusion/Discussion should include a comparison of the total energy at three positions and a generalization about the principle which the data support.  An error analysis should be conducted in which the expectations are discussed; the degree to which the data align with the expectations should be described. Averaging and percent differences should be used.







Lab E8:  Powerhouse

Question: 
What is my power requirement for climbing a staircase - both by walking and by running?

Purpose: 
To determine my power requirement for climbing a staircase - both by walking and by running.

A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion.  The Data section should include a table of both measured and calculated data for both walking and running up a flight of stairs.  The rows and columns should be labeled; units should be identified. Work should be shown for each calculation;  the work should be labeled and easy to follow.  The Conclusion should (as always) answer the questions posed in the Purpose.















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