The drawing shows a person (weight W = 599 N, L 1 = 0.831 m, L 2 = 0.418 m) doin

Question

The drawing shows a person (weight W = 599 N, L1 = 0.831 m, L2 = 0.418 m) doing push-ups. Find the normal forceexerted by the floor on each hand and each foot,assuming that the person holds this position. Force on each hand in Newtons? Force on each foot in Newtons? The drawing shows a person (weight W = 599 N, L1 = 0.831 m, L2 = 0.418 m) doing push-ups. Find the normal forceexerted by the floor on each hand and each foot,assuming that the person holds this position. Force on each hand in Newtons? Force on each foot in Newtons?

Explanation / Answer

   let us assume that the upward direction as positivethen we get
   Ffeet + Fhands - W =0
   taking the counter clockwise torques as positivefrom the figure we get
   W lW - Fhandslhands = 0
    Fhands = WlW / lhands
              = (599 N) (0.831 m) / (1.249 m)
              = ......... N
   Ffeet = W -Fhands
           = (599N) - Fhands
           =......... N
   now the force on each hand is half of the valuethat is calculated as above and similar for the foot
   also

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