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Homework Help: I need help here! Please

  1. Apr 10, 2005 #1
    I need help here! Please!!!!!

    Hola! I'm in desperate need for help, so por favor senor/ita!
    A 2kg block situated on a rough incline (angle of elevation is equal to 37) is connected to a spring of negligible mass having a spring constant of 100N/m. The pulley is frictionless. The block is released from rest when the spring is unstretched. The block moves 20cm down the incline before coming to rest. Find the coefficient of kinetic friction between block and incline. :confused:
    PLZ-someone give me a hint as to where to start...NETHING!!!
  2. jcsd
  3. Apr 10, 2005 #2
    So far, I have tried to do (0.2)ucos(37)(mg)= (0.5)(100)(0.2)^2, since I think
    W= TME(final)-TME(initial), is this right? cuz i get an answer around 60!!! which makes no sense!
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