Publicité
Les langues disponibles
Les langues disponibles
3. Equipment supplied
1 Launcher S
3 Steel balls
4. Technical data
Launch angle:
Maximum range:
Projectile:
Mass of ball:
Approx. dimensions:
Total weight:
5. Apparatus also required
2 Stainless steel rods, 470 mm
2 Table clamps
or
2 Stand bases, A-shaped
6. Operation
6.1 General instructions
•
Using the clamps or stand bases, set up the
launcher securely on a level surface.
•
Set the required launch angle by loosening the
locking screw slightly, adjusting the angle, and
re-tightening the screw.
•
Stretch the launching spring by sliding the
release trigger and engaging it in notch 1, 2 or
3
according
to
acceleration.
•
To release the ball, push the release trigger
upward by pressing on the side of it with your
thumb.
Fig. 1 Releasing the launch mechanism
Elwe Didactic GmbH • Steinfelsstr. 6 • 08248 Klingenthal • Germany •
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany •
0° – 90°
4 m
steel ball, 16 mm dia.
16.7 g
280x90x90 mm³
approx. 950 g
U15002
U13260
U8611150
the
desired
launching
Subject to technical amendments
© Copyright 2009 3B Scientific GmbH
6.2 Oblique, vertical and horizontal launching
•
Place the ball on the front magnetic holder
and set the required launch angle.
•
Release the ball.
Fig. 2 Experiment set-up for oblique launching
6.3 Determining the launch velocity
If the launcher is set in the horizontal launching
position, the launch velocity can be calculated
from the height of the launcher and the range. The
change of the horizontal velocity during the flight
can be neglected.
s
=
v
⋅
2
h
g
v = launch velocity
s = range (distance reached on table)
h = height of launcher
g = 9.81 m/s²
6.4 Comparison
between
horizontal throw
•
Place balls on both the front and the rear
magnetic holders, and set the launch angle to
0°.
•
Release both balls simultaneously.
•
Listen for the sound of the impact of the two
balls.
If the horizontal setting of the launcher is precise,
it is hardly possible to detect a difference between
the two impacts (i.e., the time of fall is the same for
both).
www.elwedidactic.com
www.3bscientific.com
free
fall
and
Publicité
