 All tracks inclined in the same direction, facing the left side of the lab in Bewkes 204 |
 View from the right side of the lab in Bewkes 204 |
 Align tracks as shown so students don't have to reach too far |
 A 2x4 clamped to the table holds one end of the track |
 A drafting board wedged up against the rod base holds the other end. Note that board is offset slightly, so the height of track can be measured (see photo below) |
 The board wedge, seen from the right side. |
 Use the photogate mounting bracket to attach photogate head to track. Remove photogate from timer, and attach to bracket using short screw shown |
 Slide the nut at the base of the bracket into side groove of track (you'll need to remove lower bumper to get it on). Attach photogate to bracket as high up as it will go), and place near the 20 cm mark |
 The height from table top to track bottom is set to 10.5 cm |
 Detail – note board offset. |
 A "heavy" cart with 500 g mass block (two tracks) |
 A "light" cart, with no additional mass (two tracks) |
 All tracks inclined in the same direction, facing the front of the lab (Bewkes 231) |
 View from the back of the lab (Bewkes 231) |
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| © | St. Lawrence University | Department of Physics |
| Revised: 16 May 2017 | Canton, NY 13617 |