1. The problem statement, all variables and given/known data See the image. 2. Relevant equations T=Iα, F=ma, I=0.5*m*r^2, Friction=u*N 3. The attempt at a solution I used the torque equation to get Tension = mcylinder*a/2, and then plugged that into a force equation for the block. mblockgsin(30)-Tension-Friction=mblock*a so mblockgsin(30)-mcylinder*a/2-μmblockgcos(30)=mblock*a I ended up with μ=0.36. Just wanted to check my answer because I never ended up using the radius of the cylinder (it canceled out), so I was wondering why it was given.