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: Trying to verify these work relations

  1. Mar 26, 2012 #1
    I need to verify these three work relations and don't know where to even start.

    Wtotal= ΔK, Wc= -ΔU and Wnc = ΔE


    The details for the whole problem were A block of mass m1 = 2.40 kg is connected to a second block of mass m2 = 1.80 kg, as shown in the figure. The two masses start from rest and are moving with a speed of 2.05 m/s just before m2 hits the floor.

    I already figured out the answers to the first three parts of the questions and the answers were.

    d=0.937m
    Wc=16.5J
    Wnc=-7.72J

    Honestly I'm not sure what they are even looking for as means for an answer.
     
    Last edited: Mar 26, 2012
  2. jcsd
  3. Mar 26, 2012 #2
    It would help if you could give us a diagram.
     
  4. Mar 26, 2012 #3
    I apologize, I knew I forgot something.
     

    Attached Files:

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook