John carried a uniform post of mass 20 kg horizontally on his shoulders as shown in

      

John carried a uniform post of mass 20 kg horizontally on his shoulders as shown in Fig 6. He placed the post on his shoulder such that the centre of gravity of the pole is 1.0 m behind him. He balanced the post by applying a downwards force F at a point 0.5 m on the part of the pole in front of him.
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Determine the value of the force F.

  

Answers


John
Clockwise moment = Anticlockwise moment

200 x 1 = F x 0.5 = F = 400 N
johnmulu answered the question on April 18, 2017 at 13:09


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