|
|
Thread Tools | Display Modes |
09-14-2018, 11:00 PM | #1 |
Spam Assassin
Join Date: May 2009
Location: Here
|
September 15, 2018: Illuminated Site of the Week: You Spin Me Wrong 'Round, Baby, Wro
|
09-15-2018, 03:17 PM | #2 |
Join Date: Feb 2009
Location: Central Texas, north of Austin
|
Re: September 15, 2018: Illuminated Site of the Week: You Spin Me Wrong 'Round, Baby,
Just in case, I would make sure everyone in the U.S. marches due East at the exact same time the thousand rockets are ignited.
|
09-18-2018, 06:20 AM | #3 |
Join Date: Sep 2008
Location: near London, UK
|
Re: September 15, 2018: Illuminated Site of the Week: You Spin Me Wrong 'Round, Baby,
Checking the calculations:
A single Atlas booster produces about 150,000lb thrust (Wikipedia) or about 650 kN. So a thousand of them produce 650 MN. Treat the Earth as a uniform sphere. Its moment of inertia is about 9.7e+37 kg m^2. If we can put all the engines on the equator such that they don't interfere with each other (the best case), the torque is about 4.1e+15 Nm. Divide torque by moment of inertia and we get an angular acceleration of 4.3e-23 radian / s^2. So if you applied that force for a full day, the change in the angular position of the Earth from what you'd expect would be 3.2e-13 radians. At the equator, the total change in distance travelled would be 0.13mm or about 1/2000 of an inch.
__________________
Podcast: Improvised Radio Theatre - With Dice Gaming stuff here: Tekeli-li! Blog; Webcomic Laager and Limehouse Buy things by me on Warehouse 23 |
09-18-2018, 08:33 PM | #4 |
Join Date: Feb 2009
Location: Central Texas, north of Austin
|
Re: September 15, 2018: Illuminated Site of the Week: You Spin Me Wrong 'Round, Baby,
|
|
|