In this super cool science experiment we are going to make an anti-gravity machine that will
actually roll up an incline.  We will learn about the laws of
gravity and center of gravity and have
some fun while doing it.

Materials

- (3) Books each 1 inch thick or more.
- (2) Yardsticks
- (2) Plastic funnels of the same size
- Black electrical tape

Procedure To Make An Anti-Gravity Machine

1) Start by stacking two books on top of each other on the floor.
2) Next set the third book away on the floor so you can lay a yardstick across the books to form a
bridge.
3) Set the second yardstick next to the first yardstick to form a V-shape with the open end of the V
on the stack of two books.
4)Tape the bowls of the funnels together.
5)Place the joined funnels on the lower end of the track formed by the yardsticks.

Whats Happens

The two funnels we taped together magically roll up the incline defying gravity. Congratulations
you have made an anti-gravity machine!

The Science Behind Anti-Gravity Machines

At first glance the taped funnels appear to defy the laws of gravity. However in reality, the center
of gravity on the
anti-gravity machine (the point at which the effect of gravity on an object is
concentrated most) moves downward as the joined funnels move along the inclined yardsticks.
The center of gravity on our machine is middle section where the tape connects the two funnels.

Gravity Facts

- The center of gravity of the hollow joined funnels is at its center, even though there is no matter
at that point for gravity to affect.

- When a boomerang is thrown, it spins about its center of gravity, which is outside its body,
between the arms of the V.

- The moon's gravitation causes the ocean tides on earth.

- You would weigh 3.75 percent more if you were standing on the North Pole than you would if
you were standing on the equator. A object on earth does not weigh the same at all places on
the planet because the earth rotates and it is not perfectly round.

- While Galileo Galilei is credited with determining that falling objects fall at the same rate,
Giambattista Benedetti determined the exact same thing in 1553—eleven years before Galileo
was born.

- Sir Isaac Newton, considered a poor student in school, discovered gravity, invented calculus,
and, in 1699, became master of the mint in England, prosecuting counterfeiters.

The Claim of Aristotle
The Greek philosopher and scientist Aristotle claimed that heavy objects fall faster than light
objects, a widely accepted belief until the sixteenth century when, according to legend, Italian
scientist Galileo Galilei simultaneously dropped two iron balls from the Leaning Tower of Pisa
(proving that all objects fall at the same rate of acceleration).

Now get your friends and make an anti-gravity machine.