We are analyzing a simple Newton's Cradle in class to supplement our learning of impulse and momentum. Our project requires us to determine the amount of time it takes for the apparatus to come to rest. In our analysis we are to only use two masses, not the typical 3+. My group and I are trying to use the harmonic motion of a simple pendulum with each mass independent of the other. Will this simplify our task or only make it harder? As of now, there are NO knowns. I have attached our excel file. Our next step should be to analyze the collision, but we are not sure how.