Name:_________________________________    Date:__________    Time:_____________

Partners:________________________________   Course:________________

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A. Basics:

1. Drop in the Data Studio CD.
2. Click "Run Presentation" or Run Tutorial".
3. List five activities that could be done with Data Studio.

___________________________________________________________________________________________

4. Click "Run Presentation".
5. Move the cursor over each one of the three high-lighted areas and write down what they represent.

__________________________________________________________________________________________

6. Click each one of the three high-lighted areas and answer the following questions:

    a. What is a Display list?________________________________________________________

    b. How to turn the list of available sensors on or off?___________________________________

    c. How to begin and end data collection?____________________________________________

7. Click the Next button.

8. Write down the three basic steps necessary for creating any experiment.

___________________________________________________________________________________________

9. State how you will create a graph display?___________________________________________

10. State how you will create a digits display?__________________________________________

11. Click the Try It button.

12. Answer the following "How to?" questions:

    a. How to resize the axes?_______________________________________________________

    b. How to scale the axes?_______________________________________________________

    c. How to annotate a graph display?_______________________________________________

    d. How to move the note to a new location?_________________________________________

    We will stop the tutorial here and you should be ready for running experiments.
 

B. An experiment to measure your palm temperature:

Apparatus: PC, interface, and temperature sensor.

1. Make sure that the power for the interface is turned on.

2. Plug in the temperature sensor to analog channel A.

3. Double-click the DataStudio icon.

4. Click Create Experiment.

5. Scroll down the sensors and click on Temperature Sensor.

6. Double-click the graph display.

7. Double-click the digit display.

8. Click the start button, after 5 seconds hold the probe of the temperature sensor in your palm.

9. Collect the temperature of your palm data for about 60 seconds.

10. Stop the data collection and write down the final temperature.__________

11. Reduce the digit display and maximize the graph window.

12. Click on the Scale to fit button.

13. Move the cursor over the horizontal axis until the horizontal scale cursor appears, move the cursor so that 100s is visible on the time axis.

14. Move the cursor over the vertical axis until the vertical scale cursor appears, move the cursor so that 35 deg. C is visible on the temperature axis.

15. Annotate your graph, as "the temperature versus time of Jane Doe's palm" and move the note to an appropriate location. 

16. Double-click the Y-axis, select Axis Settings Tab, and check "show measured name for y-axis scale". 

17. Print a hard-copy of the graph.

18. Repeat 1-17 for each partner.
 

C. Position VS Time measurement: (Written by Sarah Wilhoit, Chemistry Major)

Apparatus: PC, interface, motion sensor, stand, and meter stick.

1)               Connect the yellow plug of the motion sensor to digital channel one and the black plug to digital channel two, and set the switch setting to standard beam (wide beam).

2)               Open DataStudio.  Select “Open Activity”.  Open “P01 Position and Time” in the Physics Labs folder.

3)               Place the Motion sensor so that it is pointed at your midsection and also so that you have room to back up about 2 meters without running into anything (or anyone for that matter).  It is important that you make sure that the proper side of the sensor is pointed at you (the side with the metallic-looking circle).  You can use the dial on the side of the sensor to do this.

4)               Click on the Setup button.  Double click on the motion sensor icon.  Click on the Motion Sensor tab and make sure that the Trigger Rate is set at 10.

5)               Double click on the Position graph in the Display list on the left side of the screen.

6)               Use the plot given to determine how close you need to be to the motion sensor at the start, how far away you need to be at the end, and how long the motion should last.

7)               Click on the Start button.  There should be a three second delay during which you will have time to position yourself in front of the motion sensor.  When the sensor is collecting data it makes a faint clicking sound, so do not be alarmed, you didn’t break anything.  At least not yet.

8)               Watch the screen as you move away from the sensor and try to match your graph to the one provided. (Believe me, it’s not as easy as it looks).

9)               Try again and see if you can get any closer to the Match Data line.

10)           Determine the slope of the best-fit line corresponding to the middle portion of your best line.  This is your velocity during the experiment.

                        Your Velocity = ____________________________________

                        Partner's Velocity = _________________________________

11)           Determine how close your line came to the Match Data line by dragging the Match Score data from the Data menu to the Digits option in the Displays menu (zero indicates an exact match).

                        Your Match Score = __________________________________

                        Partner's Match Score = ______________________________

12)           How would you achieve a steeper slope on the graph?

____________________________________________________________________________

13)           How would you achieve a negative graph?

___________________________________________________________________________

D. Acceleration of a Freely Falling Picket Fence: (Written by Sarah Wilhoit, Chemistry Major)

Apparatus: PC, interface, photogate sensor, stand, and picket fence.

1)               Set up the photogate and plug it in to digital channel one on the Interface.

2)               Open DataStudio.  Select “Open Activity”.  In the Physics Labs folder select “P05 Free Fall”.

3)               Double click on the Position and Velocity graph in the Displays list on the left side of the screen. (Two graphs should appear, one of Position vs. Time and one of Velocity vs. Time).

4)               When you are ready, click on the Start button and holding the picket fence above the photogate, let it drop onto something soft on the ground.

5)               Click on the Stop button.

6)               If necessary, rescale the graph so that your data takes up most of the space.

7)               On the plot of Velocity vs. Time, add the best fit line and determine the slope of this line.  (Select “linear” from the “Fit” menu to get the line).

8)               Determine the “mean” value for acceleration by clicking on “mean” under the statistics menu.

            Acceleration of gravity = ____________________

            Partner's value of gravity = ______________________

9)               How does the slope determined in step #7 compare with the accepted value for acceleration of a free falling object? (g=9.8 m/s²)  Give the percent difference. [(accepted-expermimental)/accepted]´100%

            % Difference = ___________________________

            % Difference = ___________________________ (Partner's)

E. Atwood’s Machine: (Written by Sarah Wilhoit, Chemistry Major)

Apparatus: PC, interface, photogate sensor, pulley, mass set w/hanger, 50-g big mass, big paper clip, string, and stand.

1)               The photogate is already plugged into the interface from our earlier activity.

2)               Open DataStudio.  Select “Open Activity”.  Open “P10 Atwood’s” in the Physics Lab folder.

3)               Clamp the pulley and photogate to either the table or a ring stand.  Clamp it so that the rod is horizontal.

4)               Cut a piece of string approximately 10cm longer than the distance from either the top of the pulley to the floor (if clamped to the table) or from the top of the pulley to the table (if clamped to a ring stand).  Place the string into the groove of the pulley.

5)               Tie mass hangers to each end of the string, use a big paper clip as one hanger.

6)               Hang a 50-g (big) mass from the paper-clip and record the mass as M₁ in the Data Table. 

7)               On the other hanger, place about 60-g mass. This should make the hanger rest on the floor or table, whichever the case.  Record this mass as M₂ in the Data Table.

8)               Now, move the M₂ mass up until the M₁ mass is nearly touching the floor or the tabletop.  Hold it there to keep it from dropping.

9)               Turn the pulley so that the photogate beam is unblocked (so that the LED is not lit up).

10)           Release the M₂ hanger and immediately start recording data.

11)           Stop recording just before the M₂ hanger hits the floor.

12)           DO NOT LET THE UPWARD MOVING MASS HIT THE PULLEY.

13)           Determine the experimental acceleration by finding the slope of the Velocity VS Time graph.

14)           Repeat steps 7-13 for other masses.

15)           Calculate the net force for each run and record it in the Data Table.  F_net=(M₂-M₁)g.

16)           Calculate the total mass, M₁+M₂ and record it in the Data Table.

17)           Calculate the theoretical acceleration.  [a= F_net¸(M₁+M₂)].

18)           Calculate the percent difference between the experimental acceleration and the theoretical acceleration for each run.  Record these values in the Data Table.

DATA TABLE for Atwood's machine: (Include Units)