3 ms·
> Turning around a track definitely dissipates some heat energy through increased friction with the rails. No it doesn't, but we're talking about identical sph
by ErroneousBosh 1y ago
> Turning around a track definitely dissipates some heat energy through increased friction with the rails.
No it doesn't, but we're talking about identical spherical frictionless trains in a vacuum.
- heavenlyblue 1y agoYou are also talking about a track with infinite mass because otherwise the reason train can change direction is because it's pushing the track northwards
- ErroneousBosh 1y agoObviously! It goes without saying that the track must be infinitely massive and infinitely stiff, mounted on an entirely inflexible infinite plane. See, now you're talking real physics!