A constant horizontal force F applied by a fishing line to a uniform solid disk of radius R and mass M. The line is wrapped around the central portion of the cylinder (see the figure) with radius r = R/4 and negligible thickness (just, to hold the wrapped fishing line). Neglect the mass of the disk missing about the central disk. side view front view Find acceleration in terms of F and m. Find the magnitude of static friction, in terms of F. Is the direction of static friction in the direction of acceleration of the disk or in the opposite direction? Find kinetic energy of the disk after it moved by L, starting from rest, in terms of F, L, r, and R. Answers: a = 5F/6m, |fs| = F/6, toward left, or opposite to a, K = FL( 1 + r/R) Help! the answers are provided but I can't get them