1. Limited time only! Sign up for a free 30min personal 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!

If a block is moving and then hits a spring, is the work negative?

  1. Oct 19, 2013 #1
    Say there is a block that moves to the right. After a distance it hits a spring, and then it compresses the spring. Does this mean that the work that the spring does on the block is positive or negative?

    I would say it is negative because the block compresses the spring, so the displacement which is to the right is in opposite direction of the spring force, which during compression is trying to push the block to the left.

    Am I correct?
     
  2. jcsd
  3. Oct 19, 2013 #2

    Dick

    User Avatar
    Science Advisor
    Homework Helper

    Sure, the block loses kinetic energy. So the work the spring does on the block is negative.
     
    Last edited: Oct 19, 2013
  4. Oct 19, 2013 #3

    PhanthomJay

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Yes!
     
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: If a block is moving and then hits a spring, is the work negative?
  1. Block hitting spring (Replies: 27)

Loading...