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Static Equilibrium of a sack

  1. Nov 11, 2008 #1
    1. The problem statement, all variables and given/known data
    A boy carries a sack on one end of a very light stick that is balanced on his shoulder, at an angle of 22.0 degrees up from the horizontal. The mass of the sack is 7.00 kg, and it sits 1.20 m from his shoulder. If his hand is 0.350 m from his shoulder, on the other end of the stick, what is the magnitude of the downward force the boy exerts with his hand?

    2. Relevant equations
    net torque = 0

    3. The attempt at a solution
    7.00 * 1.20 / .350 = 24 N
  2. jcsd
  3. Nov 11, 2008 #2


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    And you got from kg to N how?
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