1. The problem statement, all variables and given/known data A solid cylindrical disk has a radius of 0.16 m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. When a 45 N force is applied tangentially to the disk, perpendicular to the radius, the disk acquires an angular acceleration of 110 rad/s2. What is the mass of the disk? F=45 N r=0.16 meters a=110 m=? 2. Relevant equations torque=F(l) torque = force * lever arm net external torque=mr^2*a 3. The attempt at a solution So far, I've gotten torque = 45*.16 = 7.2 7.2=m(0.16)^2 * 110 and solving for m gives me 2.556 but that is not correct. I am absolutely stumped. Thanks for any help.