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

Question about analyzing forces

  1. Mar 1, 2012 #1
    In a try to test my knowledge of Newton's laws, I have posed the following question to myself.

    My attempt:

    (The arrows indicate direction.)

    I have been informed that the solution is invalid, and that the question itself is wrong. Can you tell me why the problem is wrong/invalid?
    Someone tried to explain to me, but I didn't really understand.
     
  2. jcsd
  3. Mar 1, 2012 #2

    Doc Al

    User Avatar

    Staff: Mentor

    For one thing:
    This contradicts Newton's 3rd law.

    A and B will exert equal and opposite forces on each other.
     
  4. Mar 1, 2012 #3
    Thanks for the simple answer.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Question about analyzing forces
Loading...