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› › › EXPERT SETUP 3
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90°
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Rotate the model 90 degrees. Attach the
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pendulum with the angled pivot post to pegs
and
as shown.
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8
Rotate the model 180 degrees. Attach the
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centripetal force funnel to pegs
Hang the collection cup on the edge of the
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base, under the centripetal force funnel.
Adjust all the tracks and stunts so that, in
your best estimation, a gumball will travel
all the way from the dispenser down to
the collection cup. Place a gumball in the
momentum trap. It is optional to start with
a gumball or two in the tip-over tube. The
assembly is finished!
Now it's time to test the setup!
Follow steps 8 through 11 on page 14 like
11
you did for the first setup. You will need to
adjust the angle of the variable-slope track
to get the gumballs to roll out of it.
After a run, return the gumball to the globe
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each time by taking the collection cup and
dumping it into the globe funnel.
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9
180°
8
and
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9
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WHAT'S HAPPENING
In a perfect run, the machine works like this: The
tracks and stunts function similar to how they
.
did in the previous setups. The new elements in
this setup are the friction track and the
pendulum. The friction track slows the gumball
down. You might notice the gumball makes
more sound when it goes down the friction
track. The pendulum swings over and drops a
gumball into the centripetal force funnel. As in
the previous setup, the tip-over tube might need
a little nudge to tip over. On its lowest setting,
the gumballs don't roll out of the variable-
slope track after being dumped there from the
tip-over tube. Try increasing the slope of the
track and observing what happens.
Done!
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