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How much work is being done?

  1. Sep 20, 2012 #1
    A farmhand pushes a 26-kg bale of hay 3.9 meters across the floor of a barn. If she exerts a horizontal force of 88N on the hay, how much work has she done?

    My Answer:
    W=88N x 3.9m
    = 343.2 Joules

    My question: Is this correct or do I have to do something with the mass of 26-kg?
    Thank you!
     
  2. jcsd
  3. Sep 20, 2012 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Perfectly correct. The mass is irrelevant. (But maybe the question has another part.)
     
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