- #1

alyssad

## Homework Statement

In lab, we put a glider on an airtrack and used a pulley to move the glider. The mass on the pulley was changed with each iteration. I have created a graph to find the mass of the glider, but I don't know what the y-intercept is supposed to mean. The graph I have is linear, and the slope is in units of kg.

## Homework Equations

(g/a) = (m1)(1/m2) + 1

(g/a) --> 9.8/acceleration that was found experimentally

m1 --> mass of the glider and the slope of the line

m2 --> mass that was attached to the pulley

## The Attempt at a Solution

Part of the lab is to predict the y-intercept. I predicted that the y-intercept would be 1 based on the equation that we were supposed to use, but the y-intercept ended up being -2.57. I know that leads to a large percent error. What I need to know is what the y-intercept is supposed to represent in this context.

Thanks for any help that you can give!