1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Identifying Forces

  1. Sep 19, 2007 #1
    If you were sitting at rest on the moon, what forces would be present?

    I know that there is a weight force, and maybe a normal force...
    Thank you
     
  2. jcsd
  3. Sep 19, 2007 #2

    mgb_phys

    User Avatar
    Science Advisor
    Homework Helper

    Exactly the same forces as sitting on the Earth (neglecting air effects) - except with less gravity.
     
  4. Sep 19, 2007 #3
    How much force does an 50 kg astronaut exert while sitting at rest?

    I would assume 0 N since he is not moving but I'm not too certain....
     
  5. Sep 19, 2007 #4

    mgb_phys

    User Avatar
    Science Advisor
    Homework Helper

    He still has weight acting downwards.
    Remember don't think about space and astronauts - he is a mass sitting on a planet, just one with a smaller 'g' there is nothing different about space.

    'g' for the moon depends on both the smaller mass of the moon and it's smaller diameter - it's roughly 1/6 the value on earth.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Identifying Forces
Loading...