Solve 8.91 including the effect of a coefficient of rolling resistance of 0.5 mm
Chapter 8, Problem 8.102(choose chapter or problem)
Solve 8.91 including the effect of a coefficient of rolling resistance of 0.5 mm. PROBLEM 8.91 A loaded railroad car has a mass of 30 Mg and is supported by eight 800-mm-diameter wheels with 125-mm-diameter axles. Knowing that the coefficients of friction are 0.020 s = and 0.015, k = determine the horizontal force required (a) to start the car moving, (b) to keep the car moving at a constant speed. Neglect rolling resistance between the wheels and the track.
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