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Physics Lab: Calculating the Acceleration of an Elevator? When not moving the scale read 77.1kg. The...

Physics Lab: Calculating the Acceleration of an Elevator? When not moving the scale read 77.1kg. The scale read 84.4 kg when the elevator moved from the 2nd to the 1st floor, 85.3 kg when moving from the 1st to the ground floor, and 72.6 kg when both moving from the ground to the 1st floor and the 1st to the 2nd. I need to find the acceleration of the elevator going down and up using the formula a=(Fn-mg)/m. I understand that you divide your weight when not moving by 9.8 to find your mass, and the weight displayed by the scale while moving is your Fn, but don't you need this force to be in Newtons not kg in order to calculate the acceleration? How do you get them from kg to N? Or am interpreting this incorrectly?

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