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The following figure shows how a scale with a capacity of only 250 N can be used to weight a a heavier person. The board is 3m long, has a mass of 3.4kg, and is of uniform density. It is free to pivot about the end (P) farthest form the scale. What is the weight of a person standing 1.2m form the pivot end, if the scale reads 210N ? Assume that the board remains nearly horizantal . 
Ans: A