• Computer Interface:
     PASPORT: Xplorer GLX | Xplorer | USB Link | PowerLink
     ScienceWorkshop: 500 | 750 (SCSI) | 750 (USB)
• Dynamics System
• Motion Sensor
  PASPORT | ScienceWorkshop
• Base and Rod
• Fan Accessory
• Meter Stick

• PASPORT
• 500 Interface
• 750 Interface

1. What physical property does the slope of a velocity-time graph represent?
2. Define force. What are the units of force?
3. Define acceleration. What are the units of acceleration?

Part 1: Inclined Track

1. Measure the mass of the fan accessory/cart assembly with the aluminum slugs removed. Record this value.
2. Adjust the angle of the incline until the activated fan accessory/cart placed in the middle of the track does not move.
3. Find an accurate method of determining the angle of the incline. Record this value.

Part 2: Level Track

1. Level the track.
2. Turn the Fan Accessory on. Be careful not to touch the fan blades.
   
   
3. Press the Start button in DataStudio. Simultaneously, allow the cart to move away from the Motion Sensor.
4. The computer will automatically stop collecting data after 2.0 seconds.
5. Use the cursor to highlight the appropriate data from your Velocity graph. DataStudio will automatically calculate the slope of your highlighted data.

DataStudio

1. Ignoring friction, draw a force diagram of your lab set-up.
2. Calculate the force that the fan produces.
3. Using the value of the force produced from the fan, calculate the acceleration associated with this force.
4. How does your value of the slope of the velocity time graph compare to the value of the acceleration from part 1? Find the percent difference.

1. What physical factors contribute to the differences in the two values (the slope of the velocity time graph versus the acceleration from part 1)?
2. To what angle would the track need to be raised or lowered so that a cart of twice the mass would remain motionless?
3. How would the acceleration of the cart change (part 2), if the mass of the cart was half its original value?

Part 1

1. Draw a complete force diagram of your lab set-up from part 1.
2. Draw a quantitative force diagram that includes the horizontal and vertical components of this force diagram.
3. Write a Newton's 2nd Law equation for the horizontal forces.
4. Write a Newton's 2nd Law equation of the vertical forces.
5. Calculate the value of the normal force.
6. Correlate, in words, your force diagram with the motion of the cart. In other words, describe how and why the motion of the cart is related to the forces involved.

Part 2

7. Draw a complete force diagram of your lab set-up from part 2.
8. Write a Newton's 2nd Law equation for the horizontal forces.
9. Write a Newton's 2nd Law equation of the vertical forces.
10. Calculate the value of the normal force and the force of the fan.
11. Correlate, in words, your force diagram with the motion of the cart. In other words, describe how and why the motion of the cart is related to the forces involved.