How Should Logs Be Arranged in a Wheelbarrow to Minimize Back Strain?

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camino
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Homework Statement



Where is the best place to arrange most of the logs in a wheelbarrow so that it minimizes the amount of force on the backbone of the person transporting the load?

Homework Equations



Moment = Fd or r x F

E.O.E:
Sum of Fx = 0, Sum of Fy = 0, Sum of Fz = 0.
Sum of Mx = 0, Sum of My = 0, Sum of Mz = 0.

The Attempt at a Solution



This is basically just a force analysis problem with no weight or dimensions given. Any help would be appreciated.
 
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Hi camino! :wink:

The force on the backbone is just the extra force on the feet.

So what will that be related to? :smile:​