Mass calcuations in space

  • Thread starter nuby
  • Start date
  • #1
331
0

Main Question or Discussion Point

Mass calculations in space

If an astronaut wanted to determine the mass of an object in outer space (0g), what is the procedure?
 
Last edited:

Answers and Replies

  • #2
166
0
Could you though? I would think you would only be able to calculate the moment of inertia, not the actual mass.

You could attach it to a spring with a known spring constant and use simple harmonic motion.
 
  • #3
Hootenanny
Staff Emeritus
Science Advisor
Gold Member
9,622
6
Could you though? I would think you would only be able to calculate the moment of inertia, not the actual mass.
One could calculate the mass of a body of known geometry from it's moment of inertia.
You could attach it to a spring with a known spring constant and use simple harmonic motion.
However, I do think this would be the better option.
 
  • #4
Oscillating the inertial mass on a spring was the principle used to measure the mass of astronauts on Skylab.

As I'm new here I can't post urls in my messages yet, but search for "Mass Measurements Aboard Space Station Skylab" with your favourite search engine and you should get a hit from the NASA website which describes the device used to measure the astronauts' mass.
 
  • #5
dst
376
0
  • #6
Thanks... a few more posts and I'll have the power to give URLs.
 

Related Threads for: Mass calcuations in space

  • Last Post
Replies
14
Views
7K
  • Last Post
Replies
7
Views
10K
Replies
2
Views
1K
Replies
21
Views
3K
Top