2 flies, Pablo and Pedro, stand on a solid rotating disc of radius 9.5 cm, initially at rest. pablo is on the outer edge of the disk and pedro is a third of the way from the center to the edge. the disc begins rotating with a constant angular acceleration, reaching 50 rpm in 5 seconds. after 7 seconds, the discs angular speed becomes constant. the flies have a mass of 0.015 g each and their coefficient of friction with the disc is 0.250. how many times did pablo rotate until he could no longer hold on to the disk? give your answer in revolutions and as a number between 0 and 2 pi.