Thames & Kosmos Gumball Machine Maker: Super Stunts & Tricks handleiding

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WHAT’S HAPPENING

The pulley cups and wheel demonstrate a simple

machine called a pulley. This setup shows how a

downward force (the weight of a gumball) applied

to one side is transformed into an upward force of

the cup on the other side. Pulleys can change the

direction of a force, and also the amount of force

needed, to perform work. If you place two gumballs

in the second pulley cup, you probably will need

two or more gumballs to fall in the ﬁrst pulley cup

before it exerts enough weight to lift up the second.

WHAT’S HAPPENING

Like the pendulum, the tip-over tube demonstrates

center of mass and stable equilibrium. When

gumballs fall into the tube, they will stay in the

tube until the center of mass extends outside of

the stable equilibrium point and the tube tips

over, dumping the gumballs into the track below.

Tips for the tip-over tube:

If the tip-over tube doesn’t rotate in the correct

direction check to make sure that you have the

clamp attached to the pivot post correctly. If it

doesn’t tip over at all, try moving the angled pivot

post down one peg on the tower, and positioning

the tube higher up in the clamp. Also, experiment

with starting with different numbers of gumballs

in the tube.

Experiment 11: Pulleys

HERE’S HOW

Attach the pulley wheel to the tower at a

relatively high location using the straight

pivot post. Tie one end of the string to the

arm of one pulley cup. Tie the other end of

the string to the arm of the second cup. Hang

the string from the pulley wheel with a cup

on either side.

Drop a gumball into one of the cups. Drop a

gumball into the other cup. What happens?

Experiment 12: Center of mass

HERE’S HOW

Attach the tip-over tube to the tower at any

location using the angled pivot post with

stop. If the tube slides down in the clamp,

stretch a rubber band in an X shape over the

ends of the clamp to hold it in place. The tip-

over tube should be positioned high up in the

clamp. More of the tube should be above the

clamp than below the clamp.

Drop gumballs into the tube one at a time.

After each drop, try to tip the tube over. As

the tube fills up, what do you notice?

Straight

pivot post

Angled pivot

post with

stop

Tube

Clamp

Pulley

cups

Pulley

wheel

String

Now that you know how all the tracks and stunts work, follow the step-by-step assembly instructions on

the following pages to set up three expert-level gumball machines that use many of the parts together.

Rubber band

crossed

in X shape

Move pivot

post down

and tube up

Gumball Machine Maker

Bekijk gratis de handleiding van Thames & Kosmos Gumball Machine Maker: Super Stunts & Tricks, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.