1. The problem statement, all variables and given/known data First question: "A DVD player can exert a torque on a DVD of 10−3 N⋅m. What is the DVD’s angular acceleration in rad/s2? Details and assumptions The DVD has a mass of 0.015 kg and a radius of 0.06 m. A DVD can be modeled as a thin uniform cylinder. " Second question: "A cube of ice 2 cm on a side is floating in a glass of water. You observe that the top of the ice is 0.166 cm above the surface of the water. What is the ratio of the density of ice to the density of water?" 2. Relevant equations First question: α = [itex]\tau[/itex] / I I = Ʃmr2 3. The attempt at a solution First question: α = 0.001 / ((0.015)(0.06)2) = 18.5185 Not sure how I can do the second question at all... I've got these two questions from the internet. Please help me solve these question.