The cylinder is subjected to a load that has a weight W. If the coefficients of rolling re...

The cylinder is subjected to a load that has a weight W. If the coefficients of rolling resistance for the cylinder’s top and bottom surfaces are aA and aB, respectively, show that a horizontal force having a magnitude of P = [W(aA + aK)]/2r is required to move the load and thereby roll the cylinder forward. Neglect the weight of the cylinder.