The cylinder is subjected to a load that has a weight W.

Chapter 8, Problem 8-131

(choose chapter or problem)

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

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