Equipment List:

1. LabPro Interface
2. Vernier Motion Detector 2 (D5.1) (DIG/SONIC 1) with:
   
   • Cord (D5.H)
   • Mounting bracket (A2.4).
3. Vernier Dynamics Cart (D5.2) with:
   
   • 500g cart mass mounted with mounting hardware (A2.6)
4. Cart track (A7.2) with:
   
   • Adjustable Feet (A2.4)
   • Low friction pulley on bracket (A2.4)
   • End stop (A2.4)
   • String (A6.H)
5. 50 gram mass hanger (A3.5)
6. Hanging mass set ( 2-10 g, 2-20 g, 2-50 g, 1-100 g, 2-200 g) (A2.5)

Notes and tests:

1. Start the Logger Pro file "Lab 4a.xmbl" in the Lab 4 folder of Class Notes. Make sure the switch on the motion detector is on the cart setting. Click "Collect" and move the cart in front of the motion detector to test if the movement of the cart is detected by the motion detector.
2. Put the motion detector on the cart setting.
3. Level the track.