A plank having mass 4.8 kg rides on top of twoidentical solid cylindrical rollers each havingradius 4.2 cm and mass 2.0 kg. The plank ispulled by a constant horizontal force 5 N ap-plied to its end and perpendicular to the axesof the cylinders (which are parallel). Thecylinders roll without slipping on a flat sur-face. There is also no slipping between cylin-ders and plank. Find the initial acceleration of the plank at the moment the rollers are equidistant from the ends of the plank
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