1. The problem statement, all variables and given/known data A 60-cm-long, 500 g bar rotates in a horizontal plane on an axle that passes through the center of the bar. Compressed air is fed in through the axle, passes through a small hole down the length of the bar, and escapes as air jets from holes at the ends of the bar. The jets are perpendicular to the bar's axis. Starting from rest, the bar spins up to an angular velocity of 150 rpm at the end of 10 s. How much force does each jet of escaping air exert on the bar? 2. Relevant equations w1=w0t+1/2alpha(t^2) f=ma a=r(alpha) 3. The attempt at a solution change velocity into rad/s 150rpm=15.71rad/s F=ma a=r(alpha) so i subbed in a into the force equation F=m(r(alpha)) and i sub in the velocities to find alpha w1=1/2(alpha)t^2 15.71=1/2(alpha)(10)^2 alpha=0.3142 sub all the known #s into F=mr(alpha) F=.5(.3)(.3142) F=0.04713N what did i do wrong??