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!

Kepler's law

  1. Nov 14, 2014 #1
    1. The problem statement, all variables and given/known data
    An asteroid of mass m is in circular orbit of radius r around the sun with speed v.It has an impact with another asteroid of mass M and is kicked into a new circular orbit with a speed 1.5v.What is the radius of the new orbit in terms r?



    2. Relevant equations (v1)^2/(v2)^2 = (r2)^2 / (r1)^2


    3. The attempt at a solution is it using equations based on kepler's second law or third law.
     
  2. jcsd
  3. Nov 14, 2014 #2

    Orodruin

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Gold Member

    Hi sya, and welcome to Physics Forums!

    You need to provide a more detailed attempt and show your work. Let us assume that your idea is correct, how would you use that to find the new radius?
     
  4. Nov 14, 2014 #3
    is it correct?i used based on kepler's third law.
     

    Attached Files:

  5. Nov 14, 2014 #4

    Orodruin

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Gold Member

    What you have used is Newton's gravitational law, not Kepler's laws. Also, we generally do not allow posting problems or attempted solutions as image attachments or links as it requires significantly more efforts from helpers. If you want people to help you, you should make the minimal effort of typing out the full problem and your full attempt at a solution in-forum. Please refer to the Guidelines for Students and Helpers as well as the Physics Forums General Guidelines for more information.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Kepler's law
  1. Kepler's Law (Replies: 11)

  2. Kepler's Laws (Replies: 4)

  3. Keplers law (Replies: 3)

Loading...