Caculating tractive force (i need a formula)

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Homework Help Overview

The original poster seeks to calculate the total tractive resistance for a vehicle based on given parameters, including kerbside weight, rolling resistance, frontal area, and drag coefficient, while traveling at a specified speed on a level road.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the definition of tractive resistance and its components, including rolling resistance and air resistance. There are attempts to clarify the role of the drag coefficient in calculations, with some participants questioning the accuracy of the values used in the formulas.

Discussion Status

Participants have provided guidance on the formulas to use for calculating rolling resistance and air resistance. There is ongoing exploration of the implications of the drag coefficient and its units, with some participants suggesting alternative approaches and questioning the values provided in the original problem.

Contextual Notes

There is mention of confusion regarding the units of the drag coefficient and its application in the context of the problem. The discussion also highlights that the original poster is working independently without classroom instruction, which may contribute to the uncertainty in their calculations.

  • #31
i think that's probably cracked it then

thanks
 
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  • #32
dan_bighit said:
i think that's probably cracked it then

thanks
No problem, I'm sorry it took so long! I can't believe it took me that long to spot it!
 

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