One possible cause for a high initial velocity is the detection of the leading edge of the picket fence as it passes through a photogate. This is likely to happen if the edge of picket fence is marked or scratched from repeated drops or improper stor...
There are a few reasons you might want to collect data with both a Motion Encoder and a photogate at the same time. One example is for studying collisions. Since the Dynamics Cart and Track System with Motion Encoder comes with only one Encoder Cart,...
A photogate can be used to simply count blocking events. This is useful for counting the number of rotations of a wind generator or motor or for counting events in an animal behavior experiment.
INSTRUCTIONS FOR USING A VERNIER (BTD) PHTOTGATE
Photo...
This information applies to a Vernier (BTD) Photogate
Photogate (VPG-BTD)
For information about measuring acceleration using Go Direct Photogates, see
How do you measure acceleration using Go Direct Photogates (GDX-VPG)?
First, you need to understa...
The following guide pertains to setting up wired Vernier (BTD) Photogates for data collection in a projectile motion experiment.Photogate (VPG-BTD)
If you are looking for instructions for setting up a Go Direct Photogate, seeHow do I se...
This information pertains to LabQuest 2.
If you have LabQuest 3, see this article.
If you have an original LabQuest, see this article.
LabQuest 2 ⚊version 2.9.2 (March 6, 2026)
Resolved Issue
Addressed an issue where the LabQuest App wou...
The following information describes how to set up wired Vernier Photogates (VPG-BTD) when using LabQuest as a standalone device.
If you are collecting data with a computer and Logger Pro, see this article.
If you are collecting data with Graphical ...
In LabQuest 2.8.4 or newer, be sure the Photogate Timing Mode: Projectile Launcher has the "Use Time of Flight Pad" option selected.
In older versions of the LabQuest App, make sure the experiment is set to end after 6 events.
The Logger Pro 3 expe...
Vernier Projectile Launcher (VPL)
Specifications and User Guide
Troubleshooting
Primary Test: Verify that the Projectile Launcher is powered from either an interface via the photogate cable or from AC power via a LabQues...
Time of Flight Pad (TOF-VPL)
Specifications and User Guide
TROUBLESHOOTING
Primary Tests:
- When used with a Vernier Projectile Launcher, make certain that the Time of Flight Pad is connected to the "Accessory" or "Ext. Switch" port on the launcher....