1. The problem statement, all variables and given/known data 2. Relevant equations F→scale + F→g = ma That's my guess. 3. The attempt at a solution Well, I'm reading it in the book. It's an example with the answer that the scale reading will be less than my weight. But I still don't understand how that works out to be. So, a scale is pushing back the same force that's going into it? And it notices how much weight it has to balance, thus say it's balancing 81.81 kg so, about 801N is being pushed into the scale and the scale is pushing back out about 801N? What? I really don't get this.