1. The problem statement, all variables and given/known data So I need to find the values for local acceleration and frictional force due to a pulley system using the equation below. After graphing acceleration for various ∆mass vs acceleration using Excel, I get the following equation: y = 0.0144x - 0.0875 I don't understand what the slope and y intercept in this equation represent though, how can I use them to find the 'local acceleration and frictional force'? 2. Relevant equations a = (∆m/TOTAL MASS)g - (f/TOTAL MASS) where f = frictional force 3. The attempt at a solution I think I'm supposed to get the gravity constant from the linear equation, but not sure how. Obviously it's not 0.0144.