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!

Minimal Force question

  1. Dec 1, 2008 #1
    1. The problem statement, all variables and given/known data

    A 20 kg block is on a surface where the coefficient of friction is 0.30. Find the minimal force needed to have the block more slowly at a constant speed.


    3. The attempt at a solution

    So I did coefficient of friction(mass)(gravity)=frictional force
    20(0.3)(9.8)=58.86 N is the frictional force

    Now is the minimal force needed to move the block like 58.87?
     
  2. jcsd
  3. Dec 1, 2008 #2
    Yes, for the block to be moving at a constant velocity (by Newton's 1st Law), friction = force applied on block. Hence your answer is absolutely correct.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Minimal Force question
  1. Forces question (Replies: 1)

  2. Forces question (Replies: 1)

  3. Force Question (Replies: 3)

Loading...