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What Keeps A Train On It`s Tracks?

Amazing answer from Richard Feynman.

posted by Mungo9000
8/29/2009 7:49:53 PM

Views: 6308

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15 Comments

Current View: 15 / Show all Comments

udvox : LVL 40: VP 4.8: said:

Hidden (Show Comment) 76 votes

85 days 19 hours ago...

Thanks, learned something new.

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Est : LVL 31: VP 4: said:

Hidden (Show Comment) -48 votes

85 days 18 hours ago...

And planes are actually kept in the air by the collective will of everyone inside wishing that they won`t die.

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Sasuke428 : LVL 37: VP 4.5: said:

Hidden (Show Comment) 57 votes

85 days 14 hours ago...

^ no planes are kept in the air because god invented them that way ...

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choreboy : LVL 36: VP 4.4: said:

Hidden (Show Comment) -41 votes

85 days 13 hours ago...

this dude could be totally lying and none of us will know until somebody googles it for us.

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NinjaKid : LVL 34: VP 4.2: said:

Hidden (Show Comment) 23 votes

84 days 20 hours ago...

Wikipedia Says:

Wheelset (rail transport):
Conical shape
Most wheels have a conical shape of about 1 in 20. The conical shape has the effect of steering the wheelset around curves, so that the flanges come into play only some of the time. The rails generally slant in at the same rate as the wheel conicity. As the wheels approach a curve, they will tend to follow a straighter path. This causes the wheelset to shift sideways on the track so that the effective diameter of the outer wheels is greater than that of the inner ones. Since the wheels are joined rigidly by the axle, the outer wheels will travel further, causing the train to naturally follow the curve.

For its first hundred years, Queensland Railways used cylindrical wheels and vertical rails.

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