Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Artificial gravity in a spacecraft

  1. Oct 13, 2018 #1
    • Member advised to use the formatting template for all homework help requests and to show an attempt at solution.
    1. The problem statement, all variables and given/known data

    https://i.hizliresim.com/Bzp05M.jpg "spacecraft"

    Bzp05M.jpg

    Now you're in other space.No gravity at all.You 're going to make your own artifical gravity R = 100m
    Quest
    1-) With which angular velocity, g is equal to 10 (g = 10)
    2-)Can you walk from b to a? Why is that
    3-)Can you walk from b to d? Why is that
    4-)Can you walk from c to d? Why is that

    My Solution

    a=w^2.r
    10=w^2.100
    w=0.301 this one first question.
    2-3-4 questions
    I think The resulting gravity is towards the center.therefore only walking from b to d.But I could not prove

    Note:Sorry !! If you have spelling error I don't know English.I use Google
     
    Last edited: Oct 13, 2018
  2. jcsd
  3. Oct 13, 2018 #2

    phyzguy

    User Avatar
    Science Advisor

    According to Physics Forums rules, you need to make an attempt to solve the problem before we can offer help. What are your thoughts on the problem?
     
  4. Oct 13, 2018 #3
    Post removed.
    My apologies for posting possible solution before OP made fair attempt at it.
    Brain not in gear...
     
  5. Oct 13, 2018 #4
    I added.
     
  6. Oct 13, 2018 #5
    I don't understand you. What u mean ?
     
  7. Oct 14, 2018 #6

    haruspex

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Remember, it is not really gravity.. it is just some perceived force that feels like gravity.
    If you are inside a rotating drum, what force do you perceive?
    How does the direction of gravity relate to one's ability to walk?

    With regard to walking from c to d, was the arrow in the diagram given to you or did you add that? Is that the only route?
     
  8. Oct 14, 2018 #7
    Yes, I just need to examine C to D for this rotation.
    I think,No because artifical gravity in A.Can only come to A . We can't walking. Am I true ?
     
  9. Oct 14, 2018 #8

    haruspex

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    So what routes should you consider?
    I have no idea what that means.
    Please try to answer this question:
     
  10. Oct 14, 2018 #9
    Sorry,I don't know.I do research on google, I can't find
     
  11. Oct 14, 2018 #10

    haruspex

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    You don't need Google, you just need to think.
    When you walk, what is the direction of gravity in relation to the direction in which you walk?
    Would it be difficult to walk with some other relationships?
     
  12. Oct 14, 2018 #11
    I think that https://i.hizliresim.com/lZaPGX.jpg
     
  13. Oct 14, 2018 #12

    haruspex

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

  14. Oct 14, 2018 #13
    hmm... actually....

    If you walked fast enough you could go through a cross corridor, counting on residual velocity to keep you glued to the "floor", both to and from the axis.
     
  15. Oct 14, 2018 #14

    haruspex

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Getting started would be the problem.
     
  16. Oct 14, 2018 #15
    I understand you ,can you explain a little more in Question 2
     
  17. Oct 14, 2018 #16

    haruspex

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Can you walk up a wall? Why not?
     
  18. Oct 14, 2018 #17
    I think that , you can just walk from B to D
     
  19. Oct 14, 2018 #18

    haruspex

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    What about C to B?
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted