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!

Homework Help: Work done by tension

  1. Oct 4, 2011 #1
    ques: how fast block moves after sliding 100 cm on incline?[by energy conservation]
    A frictional force of 0.5 n acts


    doubt: should work done by tension be accounted?
     

    Attached Files:

  2. jcsd
  3. Oct 5, 2011 #2
    Did you give us all the information that you were given?
     
  4. Oct 6, 2011 #3
    yes i did .... i just want to know if tension does work
     
  5. Oct 6, 2011 #4
    Before the block moves you can set the total energy to zero, after the block has moved 1m the total energy is still zero and is,

    0 = .5N X 1m + mV^2/2 - mgh = force times distance + kinetic energy - potential energy

    where h is the vertical distance the block falls.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook




Loading...