Introduction to Data Collection with a PC    Name:________________________


A. Introduction: Data Studio Video


B. An experiment to measure your palm temperature:

Apparatus: PC, interface, and temperature sensor.

Procedure:

1. Plug in the temperature sensor to analog channel A, white arrow on top.
2. Double-click the DataStudio icon in the desktop.
3. Click Create Experiment.
4. Click Add Sensor, and Scroll down the sensors, and click on the first Temperature Sensor.
5. Double-click the graph display.
6. Double-click the digit display.
7. Click the start button, after 5 seconds hold the probe, black end, of the temperature sensor in your palm.
8. Collect the temperature of your palm data for about 60 seconds.
9. Stop the data collection and write down the final temperature.__________
10. Print a hard copy of the graph display.
11. Close DataStudio, by clicking the 'X' in the upper-right corner, and clicking 'NO' for the question, 'Do you want to save this activity?’.
12. Remove the temperature sensor from the interface. 


C. Distance measurement:

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

Procedure:

1.      Connect the motion sensor to digital channels 1 & 2. (Yellow-1 and Black-2)

2.      Open DataStudio, Click ‘Create Experiment’, Click ‘Add Sensor’, Select ‘Digital Sensors’, double-click ‘Motion Sensor’ and Click ‘Digits Display’.

3.      Place the motion sensor on the lab-table and set the sensor surface parallel to the lab-table surface.

4.      Click ‘Start’ and record the sensor reading of the distance to ceiling.

5.      Stop the data collection.

6.      Measure the above distance with a meter stick and calculate the % difference.

7.      Close DataStudio, by clicking the 'X' in the upper-right corner, and clicking 'NO' for the question, 'Do you want to save this activity?’. 

DATA:

            Sensor reading of the distance to the ceiling =    ___________________

            Your measured reading of the distance to the ceiling = ______________

                                                                          % Difference = ______________ 

                                   

 


D. Acceleration of a free fall:

 

Apparatus: PC, interface, motion sensor, balls, tall lab-stand, pendulum-clamp, strings, tape, scissors, and plumb-line.

 

Procedure:

  

  1. Place the lab-stand on the table and attach the pendulum clamp.
  2. Use the plumb-line to place the motion sensor exactly below the location where the ball will be hanged. (Motion sensor is already connected)
  3. Tie or tape the rubber ball to a string and hang it.
  4. Open DataStudio, Click ‘Create Experiment’, Click ‘Add Sensor’, Select ‘Digital Sensors’, double-click ‘Motion Sensor’ and set the sample rate to 50 Hz.
  5. Double-Click the graph display and select the Velocity data source.
  6. Click ‘Start’ and cut the string. (Data will be collected as the ball falls)
  7. Stop the data collection.
  8. High-light the free fall data, add a linear fit, and determine the acceleration of the free fall.
  9. Repeat the acceleration measurement for a tennis ball and complete the data table.

DATA:

      Acceleration of the free fall for a rubber ball = ___________________

Acceleration of the free fall for a tennis ball = ___________________

      Accepted acceleration due gravity                 = ___________________

 

 

 

E. MOTION         

Purpose: To analyze the motion of a cart down an inclined track using a motion sensor.

Apparatus: PC, Interface, Motion Sensor, Dynamics Track, Collision Cart, End Stop, Brass Weight, and Wooden Block.

Procedure:

1. Incline the Dynamics Track using the Wooden Block.

2. Attach the Motion Sensor at the 0-cm end and End Stop close to the other end.

3. Place the Collision Cart about 20-cm from the motion sensor and use the Brass Weight to hold the cart in place.

4. Connect the motion sensor to the interface (yellow-1, black-2), set the beam to narrow, and make the detection-surface perpendicular to the track.

5. Open DataStudio, click Create Experiment, scroll down the sensors, and double-click Motion Sensor.

6. Double-click the Graph display, O.K. position data source, and maximize the Position VS. Time graph display.

7. Click Start, and then remove the Brass Weight in order for the cart to roll down and collide with the End Stop.

8. Stop the data collection, and show your data to the instructor.___________

9. Maximize the Position VS. Time data and obtain the following:
   
    a. What is the initial/resting position of the cart?_______________________

    b. What is the final position of the cart?_____________________________

    c. Describe how the position changes with time between the initial and final positions?       (linearly or non-linearly)___________________

    d. What is represented by the slope of the Position VS. Time graph?_______________ 

    e. What is the velocity of the cart just before the collision?_______________________


10. Double-click the Graph display, select Velocity data source, and complete the following:

   a. Describe the features of the Velocity versus Time graph.   

________________________________________________________________________

________________________________________________________________________

    b. What is the maximum velocity of the cart?________________________________

    c. How well the above velocity compares to the velocity from Procedure 9e?
 ________________________________________________________________________

    d. What is the acceleration of the cart down the track?__________________________

    e. Measure the angle of inclination and calculate the acceleration due to gravity.

________________________________________________________________________

________________________________________________________________________

11. Double-click the Graph display, select Acceleration data source, and complete the following:

a. Describe the features of the Acceleration versus Time graph.   

________________________________________________________________________

________________________________________________________________________   

b. What is the acceleration of the cart down the track?________________________

c. How well the above acceleration compares to the acceleration from Procedure 10d?

________________________________________________________________________

d. What is the maximum deceleration of the cart during the collision with the End          stop?
______________________

e. If the mass of the cart is 0.5 kg, determine the maximum force exerted by the End stop in stopping the cart.
                             _____________________________________________________