Playing tug of war in space, who wins

  • Context: Undergrad 
  • Thread starter Thread starter Ithuestad
  • Start date Start date
  • Tags Tags
    Space
Click For Summary

Discussion Overview

The discussion explores the dynamics of a tug of war in a zero-gravity environment, focusing on the implications of mass, force, and movement towards a center of mass. Participants consider various scenarios and definitions of winning in this context.

Discussion Character

  • Debate/contested

Main Points Raised

  • One participant proposes that in a tug of war in space, the person with the larger mass always wins, suggesting that force is irrelevant.
  • Another participant explains that according to Newton's third law, the forces exerted by both players are equal, and they will both move towards a center of mass that is determined by their mass ratio.
  • A different viewpoint suggests that winning could be defined in two ways: the player who is moved the least or the player who reaches the center of the rope first, indicating that the lighter player could potentially win if they have a higher pulling power to mass ratio.

Areas of Agreement / Disagreement

Participants express differing views on the outcome of the tug of war, with no consensus on the definition of winning or the implications of mass and force in this scenario.

Contextual Notes

The discussion assumes a zero-gravity environment, negligible rope mass, and no friction, which may limit the applicability of traditional physics principles.

Ithuestad
Messages
1
Reaction score
0
what would happen if I played a game of tug in space? I'm considering the gravity to be zero and the mass of the rope is negligible and there is no friction. My mass is larger but the force with which I'm pulling is less than that of my lighter yet stronger opponent.

I'm envisioning that we both move towards the center and no one wins, or is the person with the larger mass always going to win. I can't quite wrap my mind around all the possible scenarios.
 
Physics news on Phys.org
The person with the larger mass always wins. The force is irrelevant.
 
Ithuestad said:
what would happen if I played a game of tug in space? I'm considering the gravity to be zero and the mass of the rope is negligible and there is no friction. My mass is larger but the force with which I'm pulling is less than that of my lighter yet stronger opponent.

Newton's third law says that the force with which you are pulling your opponent must be the same as the force with which he is pulling you.

There is a center of mass that is between you. Its distance from each of you is proportional to your mass ratio. If you each start at rest and pull on each other via a massless rope or similar arrangement, you will both wind up at that point simultaneously. No amount of pushing, pulling, kicking, wiggling or flapping of arms can change that.
 
If you consider winning as who is moved the least by their opponent, then the player with the greatest mass wins.

However if you consider winning- who reaches the centre of the rope first, it's possible the lighter player could win if he had a high pulling power to mass ratio.
 

Similar threads

  • · Replies 13 ·
Replies
13
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 14 ·
Replies
14
Views
31K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 1 ·
Replies
1
Views
4K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 2 ·
Replies
2
Views
6K
  • · Replies 195 ·
7
Replies
195
Views
25K
  • · Replies 20 ·
Replies
20
Views
3K