Thames & Kosmos Architectural Engineering handleiding

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Handleiding

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FERRIS WHEEL

EXPERIMENT

HERE’S HOW

Spin the ﬁnished Ferris wheel with your

hand and observe. Does it spin all the way

around? Remove the passenger cars from

one half of the wheel. Spin the wheel again.

What happens this time?

Remove the ﬂexible rods that hold the base

up (assembly 4). What happens?

Ferris wheel tests

WHAT’S HAPPENING

When you remove the passenger cars from half of the wheel, the wheel is

no longer balanced. The side of the wheel with the cars is heavier than

the other side. This causes the wheel to turn so the side with the cars is

at the boom, because its center of mass is below the pivot point at the

center.

When you remove the ﬂexible rods that are holding up the base, the

base no longer stands up. You can easily see how the ﬂexible rods are

pulling the base structure in the opposite direction as the weight of

the wheel when they are aached. This type of structure is called a

cantilever. A cantilever is a rigid structural element, like a beam or

plate, that is anchored at one end and protrudes out into open space

where its other end is unsupported.

Perform step 18 a total of twelve times,

until a total of 18 passenger cars are

aached to the wheel as shown.

x12

Follow the general tips

for model reﬁnements

on the inside back cover

to ﬁnish your model.

IMPORTANT NOTE!

If you let the assembled ferris wheel model sit

for a number of days, you will notice that the

wheel may distort over time. You can simply

bend it back into a smooth curve again. If you

rotate the model 180 degrees every few days,

the distortion will be minimized.

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