Q1. Pls help! Please SHOW ALL WORK FOR EACH PART OF THE QUESTION AND ROUND TO 4 SIGNIFICANT FIGURES! This is for a timed exam so please be legible! Will give thumbs up! Thanks

l. Starting from rest, a 0.75 kg brick is placed onto the rim of a 4.0-kg uniform circular disk with a 3.0~m radius rotating at a rate of 25 RPM as shown below. Assuming the brick is a point mass, determine; a. The initial angular momentum of the disk. b. The nal angular velocity of the system after the brick attaches to the rim. c. The brick's nal angular momentum