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OpenStudy (anonymous):
Problem from Mastering physics; Equilibrium I don't understand how to do it.
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OpenStudy (anonymous):
|dw:1387256491192:dw| A 43kg kg , 5.3-m }-long beam is supported, but not attached to, the two posts in the figure. A 23kg kg boy starts walking along the beam. How close can he get to the right end of the beam without it falling over?
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