Today I did the lab Curious Magnets with Louisa, trying to find and demonstrate how magnets transfer kinetic energy. In the first experiment, we taped four very strong square magnets every 2.5 inches on a ruler. Second on the right hand side, we put 2 silver magnetic balls, about half an inch in diameter, on the right side of each magnet, which stuck because of the magnetic force. Once the 9th ball got in the magnetic field, it was pulled toward the left side of the first magnet. This ball was traveling toward the magnet with 1 unit of kinetic energy, speeding up as it got closer causing the the first magnet to leave with a kinetic energy of 2 units because the potential energy was transformed into the kinetic energy. The last ball on the right of the first magnet left with 2 units, but speeding up and increasing to 3 units of kinetic energy as it reached the second magnet. The last ball on the right of the second magnet left with 3 units of kinetic energy, and the potential energy caused it to speed up to 4 units of kinetic energy by the first magnet. The last ball on the right of the fourth magnet left with 4 units of kinetic energy, but didn't speed up because there wasn't potential energy because there wasn't another magnet.
This is a picture of the effect of the first experiment, after we released the 9th magnet
The second experiment we did was to make a swinging pendulum using the Curie Effect. The Curie Effect states that when a magnet is heated up to 800 o F., it loses its magnetic power, causing the swinging magnet, a tiny neodymium iron boron magnet to be attracted to the larger, square magnet, but not stick, being repelled when it comes close, but pulled in while it is far away.
First, we made a twist of insulated wire with the tiny neodymium iron boron magnet attached to it.
Then we attached the two ends of the wire around the nail and lit the candle. The wire swung to and away from the larger magnet.
The completed second experiment
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