How to achieve “weightlessness” on your desk
How can you achieve “weightlessness” without going into open space?
Warning! This experiment involves the use of small magnets. Only under adult supervision.
- double-sided tape;
- metal paper clip;
- neodymium magnets;
- cardboard box;
- astronaut drawing;
- blue paint.
Paint a box blue and let it dry. Optionally, you can decorate it with stars. Attach a neodymium magnet to the top of the box with double-sided tape. Make an astronaut: pass a thread through a paper clip, cut out a drawing of an astronaut, and attach it to the paper clip along with a second neodymium magnet. You’ll ultimately achieve "weightlessness" by choosing the length of the thread: if the thread is too short, the astronaut will fall. Fix the free end of the thread at the base of the box and release your astronaut! If you cut the thread, the astronaut will be pulled to the magnet.
The strength of the interaction of two magnets depends on the distance between them: the closer two magnets are to each other, the greater the strength of their interaction. When the magnetic force acting on the “astronaut's” magnet becomes greater than the force of gravity acting on the astronaut and its magnet, they will be suspended in midair. The thread holds the astronaut in place, preventing it from being pulled all the way to the magnet at the top of the box.
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