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Work and Mass

  1. Oct 6, 2013 #1
    1. The problem statement, all variables and given/known data

    A total work of 250 J is done as a guy pulls a box from the ground up to the attic, 10.0 m above the ground. What is the mass of the box?

    W=250J
    h=10.0m
    g=9.81m/s^2
    m=?


    2. Relevant equations

    W=m*g*h

    3. The attempt at a solution

    m=[itex]\frac{g*h}{W}[/itex]=[itex]\frac{10*9.81}{250}[/itex]=2.55kg
     
  2. jcsd
  3. Oct 7, 2013 #2
    check the equation you have written, although the answer is right.

    since W=m*g*h
    that means m=[itex]\frac{W}{g*h}[/itex]
     
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