3B Scientific Digital Input Box User Manual

Page 4

3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com

Subject to technical amendments

6. Applications

Measuring the position, velocity and acceleration of
moving bodies using multiple photo gates.

7. Sample experiment

Measuring the velocity of a body on an air track

Apparatus needed:

1 3B NETlog

U11300

1 Digital input box

U11377

2 Photo gates

U11365

1 Air track, 1.6 m

U40405

1 Set of 4 velocity flags

U40426

1 Air flow generator (230 V, 50/60 Hz)
U15425-230
or

1 Air flow generator (115 V, 50/60 Hz)
U15425-115

2 Stand base, 1 kg

U13265

2 Stand rods, 100 mm

U15000

2 Universal clamps

U13255

•

Assemble stands by inserting stand rods into
two bases and attach the two photo gates to
them at the desired positions on the air track
(Fig. 1).

Fig. 1: Measuring the velocity of a glider over a given
distance on the air track

•

On the 3B NETlog

, select the digital input

mode, and in the software of the 3B NETlab

select the experiment template for measuring
the velocity of a glider on the air track. The
software contains all the necessary instructions
for setting up the calculation.

•

Carry out the experiment and evaluate the
result.

Fig. 2: Measurements of the time interval (number of
timer pulses) for the rider to travel between two points
on the air track