Answer: A beam of length L is carried by three men, one
Chapter , Problem 81(choose chapter or problem)
A beam of length L is carried by three men, one man at one end and the other two supporting the beam between them on a crosspiece placed so that the load of the beam is equally divided among the three men. How far from the beam's free end is the crosspiece placed? (Neglect the mass of the crosspiece.)
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