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!

Find force from a function of displacement?

  1. Sep 18, 2005 #1
    An object with mass m moves along the x-axis. Its position as a function of time is given by x(t)=At-Bt^3, where A and B are constants. Calculate the net force on the object as a function of time.

    I have no idea as to how to begin.
    Thanks for anyone's help.
    :confused: I dont know !&@#%^@%!$^$(! about doing this kind of calculus problem.
     
  2. jcsd
  3. Sep 18, 2005 #2
    You want the force, so that tells you that you need to find F=ma. You know the mass, m. So you need to find a, the acceleration function for this motion.

    Velocity is the rate of change of position, and acceleration is the rate of change of velocity. There are plenty of examples of this in physics, some of which are sure to be in your physics text, so you might take a look there and see how they did this.

    Dot
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Find force from a function of displacement?
Loading...