I need help on figuring out the answers to the questions. Help anyone who has ever done this lab. Thanks
Part 1 – We will find the mass of a cart by varying the tension in a string.
1. Setup the motion sensor on one end of the track
2. Turn on the interface (the black box next to the computer)
3. Turn on the computer
4. Log on
login: PSL user
Password:
Log on to: LANGUAGE
5. Open DataStudio
6. Choose “Create Experiment”
7. Scan for sensors. If the computer can not find the interface
(a) Check that the interface is on. The green power light is lit.
(b) Close DataStudio
8. In the sensor menu double-click on the "Motion Sensor"
9. In the sensor menu double-click on the "Force Sensor"
10. Plug in the motion sensor as shown in the "Experiment Setup"
11. Close the "Experiment Setup" window.
12. Double-Click on the "Graph" in the "Displays" sidebar.
13. You will use the graph to find the acceleration of the cart. Recall from last lab which method for
finding acceleration you preferred and use it.
14. Double-Click on the "Graph" in the "Displays" sidebar.
15. Choose "Force"
16. Attach a pulley to one end of the track and the motion sensor to the other; be sure the track is level.
17. Attach a length of string approximately the length of the track to the force sensor
18. Hang a small mass (100g) from the other end of the string
19. Place the string over the pulley and record (using the computer) the force on the cart and the motion of
the cart as it is pulled along the track
20. Draw a free body diagram for the cart and the hanging mass. Calculate the weight of the hanging mass,
use g = 9.8 m/s2 for the acceleration of gravity.
21. Do you expect the tension ?T? to be: 0 N, the weight of the hanging mass ?W?, less than ?W?,
greater than ?W?? Explain your choice.
22. If the force you measured deviates from what you expect check to see that the force sensor is operating
properly.
Does it measure 0 N when it should? Does it measure the weight of the hanging mass when it should? If not
ask your instructor for help calibrating the sensor. (tare)
23. Find the acceleration of the cart using the graph of the motion. (Remember you either use ?, a linear fit
or a quadratic fit)
24. Record in a table the weight of the hanging mass, the tension measured in the string, the acceleration of
the cart, and the inertial mass of the cart.
Hanging Weight I Tension I Acceleration I Inertial mass of cart
25. If we hung more mass on the end of the string what do you expect to happen?
26. Repeat the experiment with 4 different masses on the end of the string and record your results in the
table from step 24.
27. Add a known mass of 1000 g to the cart and repeat the entire experiment
28. Compare the two methods, do the measurements using the heavier cart have a larger or smaller percent
uncertainty?
Part 1 – We will find the mass of a cart by varying the tension in a string.
1. Setup the motion sensor on one end of the track
2. Turn on the interface (the black box next to the computer)
3. Turn on the computer
4. Log on
login: PSL user
Password:
Log on to: LANGUAGE
5. Open DataStudio
6. Choose “Create Experiment”
7. Scan for sensors. If the computer can not find the interface
(a) Check that the interface is on. The green power light is lit.
(b) Close DataStudio
8. In the sensor menu double-click on the "Motion Sensor"
9. In the sensor menu double-click on the "Force Sensor"
10. Plug in the motion sensor as shown in the "Experiment Setup"
11. Close the "Experiment Setup" window.
12. Double-Click on the "Graph" in the "Displays" sidebar.
13. You will use the graph to find the acceleration of the cart. Recall from last lab which method for
finding acceleration you preferred and use it.
14. Double-Click on the "Graph" in the "Displays" sidebar.
15. Choose "Force"
16. Attach a pulley to one end of the track and the motion sensor to the other; be sure the track is level.
17. Attach a length of string approximately the length of the track to the force sensor
18. Hang a small mass (100g) from the other end of the string
19. Place the string over the pulley and record (using the computer) the force on the cart and the motion of
the cart as it is pulled along the track
20. Draw a free body diagram for the cart and the hanging mass. Calculate the weight of the hanging mass,
use g = 9.8 m/s2 for the acceleration of gravity.
21. Do you expect the tension ?T? to be: 0 N, the weight of the hanging mass ?W?, less than ?W?,
greater than ?W?? Explain your choice.
22. If the force you measured deviates from what you expect check to see that the force sensor is operating
properly.
Does it measure 0 N when it should? Does it measure the weight of the hanging mass when it should? If not
ask your instructor for help calibrating the sensor. (tare)
23. Find the acceleration of the cart using the graph of the motion. (Remember you either use ?, a linear fit
or a quadratic fit)
24. Record in a table the weight of the hanging mass, the tension measured in the string, the acceleration of
the cart, and the inertial mass of the cart.
Hanging Weight I Tension I Acceleration I Inertial mass of cart
25. If we hung more mass on the end of the string what do you expect to happen?
26. Repeat the experiment with 4 different masses on the end of the string and record your results in the
table from step 24.
27. Add a known mass of 1000 g to the cart and repeat the entire experiment
28. Compare the two methods, do the measurements using the heavier cart have a larger or smaller percent
uncertainty?