A plank with a mass M = 5.9 kg rides on top of two identical, solid, cylindrical rollers that have R = 5.2 cm and m = 2 kg. The plank is pulled by a constant horizontal force F of magnitude 5.9 N applied to the end of the plank and perpendicular to the axes of the cylinders (which are parallel). The cylinders roll without slipping on a flat surface. There is also no shipping between the cylinders and the plank.