Bending a law of motion?
I saw a perpetual motion
Youtube video recently
that tickled my curiosity.
Anna was intrigued as well,
so we ordered some pinewood
derby wheels and a box
of magnets to see if we
could understand this puzzle a little better.
We had fun tinkering with it
for a few evenings before we came to the conclusion that the video is a
trick that uses gravity instead of magnetism to move the car.
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About us: Anna Hess and Mark Hamilton spent over a decade living self-sufficiently in the mountains of Virginia before moving north to start over from scratch in the foothills of Ohio. They've experimented with permaculture, no-till gardening, trailersteading, home-based microbusinesses and much more, writing about their adventures in both blogs and books.
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Scientific inquiry at its finest. Thank you, Mark.
The trick used is an old one. The table, background, camera and lights are all fixed with respect to each other and the stuff on the shelf is bonded down. The whole can be rotated or tilted.
Some famous examples of this can be seen in the film “2001: a space odyssey”. For instance people walking in the circular space station or centrifuge in the spaceship Discovery.