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Part A : Constant Total Mass Set up the Dynamic Cart Track with a Smart Pulley and accessory photogate timer at its end.Made sure the
Part A: Constant Total Mass
- Set up the Dynamic Cart Track with a Smart Pulley and accessory photogate timer at its end.Made sure the track is level.
- Plugged the photogate into Digital Input 1 in the Signal Interface Box.
- Attached a string to the cart that will span the length of the track and suspend a weight hanger over the pulley.
- The cart has a mass of 500g. Placed an additional 300g of mass on the cart. While holding the cart at the end of the track, placed a Total weight of 100g on the hanger. (Note that the weight of the hanger is 50g)
- Pressed the "RECORD" button and released cart. Clicked on "STOP" button before cart reached end of rail.
- Repeated steps 3 through 5 six times, each time removing the mass from the cart in 50g increments and adding it to the hanger.
- Find the percent error forAtheoandAexp
Table I: CONSTANT MASS | ||||||
M2 Cart(kg) | M1 Hanger(kg) | MT (kg) | Fnet (N) | Atheo (m/s2) | Aexp (m/s2) | %E |
1.05 | ||||||
1.55 | ||||||
2.03 | ||||||
2.52 | ||||||
3.26 | ||||||
3.52 | ||||||
4.40 |
Part B: Constant Force
- The same set-up was used as Part A.
- The cart has a mass of 500g.Placed an additional 2000g of mass on the cart. While holding the cart at the end of the track, placed a Total weight of 100g on the hanger. (Note that the weight of the hanger is 50g)
- Pressed the "RECORD" button and release cart. Click on "STOP"button before cart reached end of rail.
- Repeat steps 3 through 5 four times, each time removing mass from the cart in 500g increments.
- Find the percent error forAtheo andAexp
Table II
Constant Force | ||||||
M2 Cart(kg) | M1 Hanger(kg) | MT (kg) | Fnet (N) | Atheo (m/s2) | Aexp (m/s2) | %E |
0.402 | ||||||
0.481 | ||||||
0.645 | ||||||
0.872 | ||||||
1.598 |
Questions:
(Show Calculations for partial credit)
- Plot the data in Part A. Plot Force versus acceleration (both theo. & exp. in one plot using 2 series)
- Plot the data in Part B. Plot Force versus acceleration (both theo. & exp. in one plot using 2 series)
ASK if you don't know how to do that.
- What is your observations for the plot created in question 1
- What is your observations for the plot created in question 2
- How does the mass added on the hanger affect the velocity of the cart?
- Discuss what is being demonstrated in each part of the experiment.
- Discuss the value of the experiment.
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