Basic Idea:

• Students will get a visual representation of the acceleration of a falling object.

• 5 

	What:	How Many:	Where:
	Pasco Tape Timer (no battery needed; see battery note below!)	1	non-Majors storeroom, shelf G2
	Condor 9-volt power adapter (these are the ones used for the optical bench diode lasers (red) from the Phys104 Diffraction & Interference experiment)	1	Majors storeroom, shelf N5
	Paper Tape Roll ½" wide	1	non-Majors storeroom, shelf G2
	200 g mass with hook	1	non-Majors storeroom, shelf D3
	Small bench clamp	1	non-Majors storeroom, shelf C4
	10 mm x 25 cm rod	1	non-Majors storeroom, shelf A3
	Roll of masking tape	1	Ask Jeff
	2–m meter stick	1	non-Majors storeroom, shelf AA2
The following items are shared; place in lab under coat rack:
	Step stool (round) – see photo details	2	non-Majors storeroom, first row back

Notes:

• Lab Setup (photo details):
  • Battery Note: After using these tape timers for nearly 30 years and dutifully installing and removing a 9-volt battery every semester, I realized that these timers use the same 9-volt power adapter that we use for our red diode lasers. Therefore, batteries are no longer needed. The mills grind slowly …
  • The timers are labeled A through H. Attach them in the corresponding locations below.
  • Install small bench clamp upside down, as shown below and in the photos
  • Note for Jeff: Adjust position of carbon disc (or replace it) before the Monday lab!

• Install small bench clamp inverted:

Return To Setup Instructions

©	St. Lawrence University	Department of Physics

Revised: 05 Sep 2025

Canton, NY 13617