Rail transportation is a lot more efficient than highway due to its much smaller rolling friction. A good conductor of a locomotive usually compresses a fully loaded freight train (pushing backwards) before she starts to pull the cars forward. Why is this needed?

Rail transportation is a lot more efficient than highway due to its much smaller rolling friction. A good conductor of a locomotive usually compresses a fully loaded freight train (pushing backwards) before she starts to pull the cars forward. Why is this needed?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter12: Static Equilibrium And Elasticity

Section: Chapter Questions

Problem 37P: To get up on the roof, a person (mass 70.0 kg) places 6.00-m aluminum ladder (mass 10.0 kg) against...

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