Welcome, Guest

Author Topic: random facts of the day  (Read 3825 times)

vh

  • formerly mudkipz
  • *****
  • Posts: 1140
  • "giving heat meaning"
random facts of the day
« on: November 08, 2013, 08:13:22 PM »

a ball placed on a tautochrome curve and acted on by uniform gravity will reach the bottom in the same amount of time no matter the starting point


a brachistochrone curve will carry a ball acted upon by uniform gravity from point a to b in the shortest amount of time.


blotz

  • Formerly 'bong'
  • *****
  • Posts: 813
  • op pls
Re: random facts of the day
« Reply #1 on: November 09, 2013, 06:57:51 AM »
What if the  ball is already at the end?

clockworks

  • *****
  • Posts: 64
  • Connor
Re: random facts of the day
« Reply #2 on: November 09, 2013, 09:51:23 AM »
a new ligament has been discovered in the knee

Darvince

  • *****
  • Posts: 1842
  • 差不多
Re: random facts of the day
« Reply #3 on: November 09, 2013, 01:39:14 PM »
What if the  ball is already at the end?
it will not move

blotz

  • Formerly 'bong'
  • *****
  • Posts: 813
  • op pls
Re: random facts of the day
« Reply #4 on: November 09, 2013, 04:15:53 PM »
but it's already there

Bla

  • Global Moderator
  • *****
  • Posts: 1013
  • The stars died so you can live.
Re: random facts of the day
« Reply #5 on: November 11, 2013, 01:58:21 AM »

tuto99

  • *****
  • Posts: 533
  • Baba Booey
Re: random facts of the day
« Reply #6 on: November 11, 2013, 10:42:36 AM »
What if the  ball is already at the end?
Good point. If the ball is at the endpoint on that curve, it wouldn't move at all, contradicting what vh said.

FiahOwl

  • *****
  • Posts: 1234
  • This is, to give a dog and in recompense desire my dog again.
Re: random facts of the day
« Reply #7 on: November 11, 2013, 11:18:54 AM »

This message is only viewable with Universe Sandbox Galaxy Edition. Access it and much more with promo-code '112728'.

« Last Edit: March 22, 2021, 01:28:01 AM by FiahOwl »

tuto99

  • *****
  • Posts: 533
  • Baba Booey
Re: random facts of the day
« Reply #8 on: November 11, 2013, 11:32:30 AM »
if you're at the bottom and not moving then technically you never started moving at all therefor you never moved and you don't apply to the curve
>.> You are just curving away from the fact that if you are at the bottom of the curve, THEN IT IS STILL ON THE CURVE.

Quote
a ball placed on a tautochrome curve and acted on by uniform gravity will reach the bottom in the same amount of time no matter the starting point
If the starting point was on the end of the curve, it's still on the curve. There is not a statement implying the ball has to move.

vh

  • formerly mudkipz
  • *****
  • Posts: 1140
  • "giving heat meaning"
Re: random facts of the day
« Reply #9 on: November 11, 2013, 12:46:37 PM »
about the tautochrome curve:

a point placed on the open interval (a,b) of a tautochrome curve where a is the start and b is  the end of the curve will take time t to travel to the end when acted upon by uniform gravity where t is constant.

---

http://en.wikipedia.org/wiki/Weierstrass_function

this function is continuous at every point, but differential at none

Bla

  • Global Moderator
  • *****
  • Posts: 1013
  • The stars died so you can live.
Re: random facts of the day
« Reply #10 on: November 13, 2013, 03:40:33 AM »
Municipal tax rates in Denmark

vh

  • formerly mudkipz
  • *****
  • Posts: 1140
  • "giving heat meaning"
Re: random facts of the day
« Reply #11 on: November 13, 2013, 04:47:36 AM »
i read municipal as munichpal

atomic7732

  • Global Moderator
  • *****
  • Posts: 3849
  • caught in the river turning blue
    • Paladin of Storms
Re: random facts of the day
« Reply #12 on: November 13, 2013, 06:36:37 AM »
munchable tax rates