A train consists of a 64-Mg engine and three cars, each having a mass of 33 Mg. If it takes 64 s for the train to increase its speed uniformly to 38 km/h, starting from rest, determine the force T developed at the coupling between the engine E and the first car A. The wheels of the engine provide a resultant-frictional tractive force F which gives the train forward motion, whereas the car wheels roll freely. Submit your answer in kN.

A train consists of a 64-Mg engine and three cars, each having a mass of 33 Mg. If it takes 64 s for the train to increase its speed uniformly to 38 km/h, starting from rest, determine the force T developed at the coupling between the engine E and the first car A. The wheels of the engine provide a resultant-frictional tractive force F which gives the train forward motion, whereas the car wheels roll freely. Submit your answer in kN.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.79P: The coefficient of rolling resistance between the 30-kg lawn roller and the ground is r=0.1. (a)...

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The coefficient of rolling resistance between the 30-kg lawn roller and the ground is r=0.1. (a) Determine the force P required to pull the roller at a constant speed. (b) What force P would be needed to push the roller at a constant speed?
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