1. The problem statement, all variables and given/known data ---Find Angular Speed--- 2. Relevant equations I = 1/2 mR^2 Ug = mgdsinθ Us = 1/2 kd^2 KE = 1/2 I w^2 3. The attempt at a solution Moment of inertia of reel = 1/2mR2 Kinetic energy of the reel = 1/2 mv2 = 1/2(1/2mR2) w2 KE = mgdsinθ (potential due to gravity) + 1/2kd2 (spring potential) w = sqrt(4(mgdsinθ + 1/2kd2) / mR2) This answer is incorrect, I'm wondering where I went wrong. Please help if you are able to. Cheers!