▲ 1 r/spacequestions+1 crossposts

If there was a giant rope tied to the International Space station, would it be hard to pull it to earth?

What would the necessary force be?

Edit: This is under the assumption that it was geosynchronous.

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u/wafflecheese — 8 days ago

I don't think I will ever beat my son again....

At table tennis.

In fact, I'm kind of in a dilemma.

He's 12, and our games are no longer close. He's destroying me. At his group coaching, he's not really challenged by anyone there anymore and just beat his coach for the first time.

He also has a private coach who is very generous with his time who is 1950 ish level.

He still is average to just above average at the club and has now graduated from others saying 'I don't want to play against a kid' to: 'Hey man, wanna play?'

I'm entering him into tournaments and he's hanging in there and doing well in the 'B group,' many times placing within the top 3.

He always wants to play. He watches all table tennis videos he can get his hands on.

So my question is: How to I keep him engaged the way he's demanding it? How do I keep him challenged outside of just having him go to the club and occasional tournaments?

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u/wafflecheese — 1 month ago

I'm building a backgammon site/community that fixes everything I've hate about backgammon

It's building slowly, but I've been playing backgammon for > 27 years and there are 3 things that are recurring frustrations for me:

#1 - there is no way Backgammon sites are fair. (Or is it just me?)
#2 - There is no way the ranking system is fair.
#3 - What's the point?

Here's what I believed I solved (and am committed to be #1 in the world at)

-The dice have got to be fair - all are honest and verifiably random.

-Also, the ranking system doesn't use Elo (which is awful) but a modified Colley matrix. You are only ranked against real, human players who have also registered. As the community grows, you are matched up against people who are most closely rated to your skilll level (no more getting destroyed or easy wins. You are challenged every game)

-What's the point? Well, you can play for free if you want - you don't even have to register for an account to play against bots (also matched to your skill level) But to be a member of the community, play friends, join tournaments and win Battle Bucks and (and even lose some if you don't win) just create an account.

Also, post-game analysis is great with PRs (not exclusive, but I got it, too.)

All of it is completely transparent.

As we build the community, we'll gather at 8PM ET for real-human matches, but otherwise you can still play bots in the meantime (or if you arrange to play buddies, that'll work too.)

Honest feedback welcome, https://backgammonbattles.com

Oh, I forgot to mention.

It's also completely free forever if you want for non premium.

Also, 10 dollars worth of Battle Bucks I'm giving away free during a 30 day premium trial where no one pays a thing. (just cancel if you hate it - I made that way easy, too - cause I hate how hard cancelling stuff is.)

u/wafflecheese — 2 months ago