Posted by **Emily** on Sunday, October 21, 2012 at 4:38pm.

To determine the location of his center of mass, a physics student lies on a lightweight plank supported by two scales L = 2.44 m apart.

If the left scale reads 309 N, and the right scale reads 125 N, calculate the student's mass.

Calculate the distance from the student's head to his center of mass

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