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Construction
Ready to start playing?
Make your own Brachistochrone Demonstration
![](https://static.wixstatic.com/media/c1a013_2d10da9e9d644c0f94284e57c78aaf79.jpg/v1/fill/w_489,h_271,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/c1a013_2d10da9e9d644c0f94284e57c78aaf79.jpg)
Materials
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2 large boards of styrofoam
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projector
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hot glue
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X-Acto knife
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Hot Wheels tracks
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ball bearings
Method
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Using projector, project a cycloid track onto one styrofoam board
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Cut along cycloid path with X-Acto knife
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On second styrofoam board, trace a straight line from beginning
to the end of the cycloid path. Cut out with X-Acto knife
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Connect Hot Wheels tracks and hot glue them to both paths along the styrofoam
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Roll ball bearings down both tracks, and observe the solution to the brachistochrone problem!
![](https://static.wixstatic.com/media/c1a013_c1da02803e4945f3821e5bbdc9effe33.jpg/v1/fill/w_965,h_91,al_c,lg_1,q_80,enc_auto/c1a013_c1da02803e4945f3821e5bbdc9effe33.jpg)
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