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

How to calculate the ratio of weight?

  1. Feb 6, 2012 #1
    1. The problem statement, all variables and given/known data
    Two body move apart by force. Frictional forces are considering. How to calculate the ratio of weight?

    2. Relevant equations


    What is the procedure of calculation.
    Thank you for your help.

    Attached Files:

  2. jcsd
  3. Feb 6, 2012 #2


    User Avatar
    Science Advisor
    Homework Helper

    welcome to pf!

    hi asteorit! welcome to pf! :smile:

    sorry, but i don't understand the set-up :redface:

    what is the connection between these two bodies?
  4. Feb 7, 2012 #3
    Re: welcome to pf!

    Hi tiny-tim,

    These two bodies are connected by linear actuators. Force F of the linear actuator, will act on both the bodies. We know that the bodies should move along the path L, L=x1(t1)+x2(t1). We know that m1<m2.
    If I assume correctly, and the trajectory of bodies depends on the mass ratio. Or is also dependent on the time t1?
    What is the ratio of the mass of bodies[itex]\frac{m_{2}}{m_{1}}[/itex]=?, if the sum of their orbits must be equal to L?
  5. Feb 7, 2012 #4


    User Avatar
    Science Advisor
    Homework Helper

    hi asteorit! :wink:

    i see … so it's equal-and-opposite-reaction-forces, but without contact

    ok, then start by writing out Ftotal = ma for each body …

    what do you get? :smile:
  6. Feb 7, 2012 #5
    I do not understand it, to me you ask? Some will not understand it?
    Because I need to know what is the ratio of the masses.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook