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61. (a) Setting up equilibrium of torques leads to

                                                                                L            L
                                       Ffar      end L   = (73 kg)(9.8 m/s2 )     + (2700 N)
                                                                                4            2
        which yields Ffar   end   = 1.5 × 103 N.
    (b) Then, equilibrium of vertical forces provides

                                   Fnear   end   = (73)(9.8) + 2700 − Ffar       end   = 1.9 × 103 N .

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P13 061

  • 1. 61. (a) Setting up equilibrium of torques leads to L L Ffar end L = (73 kg)(9.8 m/s2 ) + (2700 N) 4 2 which yields Ffar end = 1.5 × 103 N. (b) Then, equilibrium of vertical forces provides Fnear end = (73)(9.8) + 2700 − Ffar end = 1.9 × 103 N .