Question

A 64 kg woman stands on a very light, rigid board that rests on a bathroom scale at each end. She is 1.5m in on the 2m board. What is the reading on each of the scales in kg? Homework is almost due and I cant figure this out!!!!

Answer 1

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Answer 2

You need to set the moment about either scale equal to zero, and then solve for the force on the opposite scale. The scale she is closest to gets three times as much force as the other, because the lever arm is three times less.