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: How do you find acceleration when you are only given netwons?

  1. Nov 1, 2006 #1
    Okay, there is 20 N of force upward and there is 480N of weight pulling down, how do I find the acceleration??
     
  2. jcsd
  3. Nov 1, 2006 #2
    Net force is then 20N - 480N = -460N.

    Divide by the mass (F = ma).
     
  4. Nov 1, 2006 #3
    nvm I got it, you just divide N by gravity (dumb me) to get the mass then dvide the N by mass to get acceleration!! Thanks anyways! :smile:
     
  5. Nov 2, 2006 #4

    Andrew Mason

    User Avatar
    Science Advisor
    Homework Helper

    Just so you don't confuse people, I think you get the point but your terminology is wrong. You divide the weight by gravitational acceleration to get the mass (W = mg so m = W/g). You then divide the net force by the mass to get the mass' acceleration (F/m = a).

    AM
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook