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Pulling a box vertically

  1. Mar 8, 2007 #1
    1. The problem statement, all variables and given/known data
    A box of mass 5.0 kg is pulled vertically upwards by a force of 68 N applied to a rope attached to the box. Find a) the acceleration of the box and b) the vertical velocity of the box after 2 seconds.

    2. Relevant equations
    ma = Force and a = T/m -g
    a = 68/5 - 9.8 = 3.8 m/s^2

    v = vo + axt
    v = 0 + 3.8 x 2 = 7.6 m/s.

    Does this look right?

    Thanks!
     
  2. jcsd
  3. Mar 8, 2007 #2

    radou

    User Avatar
    Homework Helper

    Yes, it does.
     
  4. Mar 8, 2007 #3
    Thank you!
     
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