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chopsuwe t1_iuc3h09 wrote

Get a big 4x4 post of at least 2 meters long to use as a lever. Stick one end under the swing set and with a block of wood as close as possible to act as a pivot.

100kg of human bouncing on a 2 meter long lever is 2 tonnes of force. That's more than enough to lift a car, it'll be plenty for a swing set.

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RealCanadianDragon t1_iud866e wrote

So I'd probably have to dig underneath the side of the swingset that dug into the ground?

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