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!

Spring problem on work and force

  1. Feb 2, 2014 #1
    1. The problem statement, all variables and given/known data

    a .4 kg mass compresses a spring of .2m. The spring constant is 400n/m How fast is the mass moving after the mass is released and the spring uncompresses? If the mass is going up a .5m hill, how fast is it going?



    2. Relevant equations

    PE+KE=w

    PE=mgh

    KE=.5mv^2




    3. The attempt at a solution

    PE=.5(9.8)(x)
     
  2. jcsd
  3. Feb 2, 2014 #2
    To find how fast its moving right after the spring decompresses, use energy conservation. Elastic potential energy is lost, and kinetic energy is gained.

    You'll have to clarify the second part -- is the hill 0.5m high? Do you mean how fast is it going at the top?
     
  4. Feb 2, 2014 #3
    The hill is .5m high
     
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: Spring problem on work and force
Loading...