1. The problem statement, all variables and given/known data A .5 kg steel block rotates on a steel table, attached to a 1.20m-long hollow tube. Air is fed through the tube and is ejected from the block, giving it a thrust force of 5.21N perpendicular to the tube. Max tension the tube can withstand without breaking is 50N. Assume coefficient of kinetic friction between steel block and steel table is 0.60. If the block starts from rest, how many revolutions does it make before the tube breaks? 2. Relevant equations a_r = mv^2/r = omega^2 * R 3. The attempt at a solution I have solved for the angular velocity and got 9.125. I'm not sure where to go from here or which equations to use. I think it might have something to do with the tangential acceleration, but I don't know how to find that.