1. The problem statement, all variables and given/known data Hey Guys, I don't really want to have to post this in of all places due to how advanced everyone else is compared to me, but I went to my second physics class and I have a huge problem. My teacher gave me my homework, but I have no idea on earth how to do it because she rushed the lesson because of a pep rally. I'm sure I'm not the only one in my class with this same problem, but I'd rather not give up on my first day of physics class. The problem is: mgh = 1/2kx^2 and she simply asks: Find the slope, Write down what the slope means/represents, then find k. g is gravity (9.8 m/s^2) k is spring constant (what she wants us to solve for) m is mass of marble (.2 kg) h is maximum height achieved x is distance the spring has been compressed. It also comes with a table, Distance Spring is Compressed (m) | Max Height Achieved (m) .05 | .219 .1 | .875 .2 | 3.5 .3 | 7.88 .4 | 14 .5 | 21.9 but there's a catch. You have to graph it in excel and linearize the data to be allowed to find the slope, instead of simply solving for it algebraically (at least I think she didn't want us to do that.) simple as that. At least I think this is simple. This was my first day of physics after all. 2. Relevant equations 3. The attempt at a solution My attempt was creating a scatterplot of x(distance compressed) vs. h(max height) to the square root in order to try to linearize it. When done, it does create a linear graph with a solvable slope of 10. However, whenever you place 10 into the spring constant and check to see if they are equal by inputting a corresponding x and h, they aren't equal. Where am I messing up here? I know the answer will probably be painfully obvious to you, and honestly, I don't mind if you come off rude. I'm here to learn, any replies would be amazing.