Hi~ This is the question i got A yo-yo has radius 8.00cm and mass 0.180kg with small hoop. The yo-yo is released at rest and after yo-yo descended 75.0cm calculater the angular speed of the rotating yo-yo and the speed of its center. I tried to use K=1/2Mv^2+1/2IW^2 but i got weird number.... I have the answer but I need t know how to solve it... Just in case the answer for angular speed is 33.9rad/s and the speed of its center is 2.71m/s. I'm seriously fall into the deep~~~~ocean.