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!

Work Problem-Physics

  1. Oct 11, 2005 #1
    Here is the problem:
    A 10.0-kg crate is pulled up a rought 20 degree incline by a 100-N force parallel to the incline. The initial speed of the crate is 1.5 m/s, and the coefficient of kinetic friction is 0.40. The crate is pulled a distance of 5.00m. Determine the work done by the:
    1. Gravitational force
    2. 100-n force
    3. Change in KE of the crate
    4. What is the speed after it is pulled 5.00m?

    Here are my answers:
    1. W=mgh=167.76 J
    2. W=Fdcos(theta)=469.84J
    3. KE=KE(f)-KE(i)= 302.085J
    4. KE +W=KE(f) + PE(f)
    v=7.916 m/s

    Can anybody confirm these answers for me? I only feel half confident on them.
     
  2. jcsd
  3. Oct 11, 2005 #2

    Pengwuino

    User Avatar
    Gold Member

    Please do not double post
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Work Problem-Physics
  1. Physics work problem (Replies: 5)

  2. Physics work problem. (Replies: 4)

Loading...