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Decoding the loopy physics of hula hooping with high-tech earthquake sensors

Hula hooping may be literal child's play, but as it turns out, the physics behind the gym-class staple is so complicated that scientists have spent decades trying to understand how the hula hoop defies gravity.

Decoding the loopy physics of hula hooping with high-tech earthquake sensors

We haven't written up this one. Phys.org has the full story — the link below goes straight to it.

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