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Physics ~5 minnormal modes, coupled oscillators, superposition
Two carts, one spring that sometimes sleeps
Two carts on springs, joined by a third. Move them together and the middle spring never stretches. Pull them apart and everything changes.
Physics · ~5 min · live model
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The idea behind this lab (open after you’ve tried it)
Any motion of two coupled carts is a mix of two normal modes: moving together, where the middle spring is idle, and moving apart, where it works and the rhythm quickens.
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