Gymnastic High Bar

[PatrickPowers]

In 4D the high bar of gymnastics could be two dimensional. In general, in N dimensions the high bar can be N-2 dimensional. Only two barless dimensions are needed to grab a bar then circle around it.

[DonSoreno]

Perhaps tetraspace inhabitants would have 2 different high bars, one that resembles a prismic cylinder and one that resembles a spherinder.

You can take the cartesian product of a 2d disk, and any arbitrary 2d shape, like a pentagon or a "H" shaped cut-out, to which you can attach a cubinder on all 4 corners, and thus you have a 4d wheel axle.

[PatrickPowers]

My best guess is that gym bars would still be 1D. That both gives the athelete the maximum freedom and also minimizes cost. A potent combination.

So why did I bring it up? Because the idea of a 2D gym bar is mind boggling. I hope.

[PatrickPowers]

Suppose you have a 1D gym bar in 5D. Then you could have two gymnasts doing giant circles on that bar in two planes whose intersection is a point. No danger of collision.

[wendy]

The gym bar would be something that separates height of a wall, that is N-2 dimensions. That's what is necessary to divide the space of the track.