2
•
Attaching the
B
ase
o
The hex nuts fit onto the attachment screws
through the holes in the base. Use the small
hex wrench to tighten both until snug.
•
Loading the
M
arble
o
Set launcher to desired angle before loading
the
marble. To load, put the marble right into
the
hole at the top of the barrel. Be sure to
load
the marble into the barrel before pulling
the
launch lever back into the locked and
ready to
fire position.
•
Launching the
M
arble
o
After loading the marble into the barrel, pull
the lever back to one of the five possible
notches and set into place. The marble
launcher will be ready to launch. Push down
on
the launch level gently with your thumb to
slowly slide the lever off the notch to send the
marble flying.
•
Attaching a Photogate & Timer
o
The photogate attaches to the tab on the end
of the wood "arm" that supports the barrel. Be
sure that the light beam crosses the center of
the barrel so you get an accurate speed
measurement. Next, connect one end of the
timer
to the photogate. Connect the
other end
of the
photogate
to the timer into
the slot
marked "A". If d is the diameter of the
marble
(0.019 m ) and tA is the time interval
during
which the light beam was broken (in
seconds),
then the initial velocity of the marble
is d/tA in
m/s.
•
Using Launch Settings
o
Pull the lever into one of the five setting
notches. Launch the marble by slowly moving
the lever of
the notch toward the long slot.
Setting 1 is the slowest setting and 5 is the
fastest.
Please follow safety guidelines printed on launcher.
Wearing goggles is always recommended.
