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Experiments with 4 gears
APP669
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Experiments with 4 gears
Two, three, or even four-wheel drive wheels can be mounted in any order on a plastic base for transmission. Observations on the direction of rotation can be made. Turning once a toothbrush, we notice how many laps the others are doing. (This can be done more easily by blackening a beam with a marker on each gear).
5.5.1
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