How to Calculate Tire Contact Area from Weight and Pressure

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Homework Help Overview

The discussion revolves around calculating the contact area of a tire based on the weight of a car and the pressure in the tires. The subject area includes concepts from physics related to force, pressure, and area.

Discussion Character

  • Exploratory, Mathematical reasoning

Approaches and Questions Raised

  • The original poster attempts to calculate the contact area using the formula A=F/P, where they have provided the weight of the car and the tire pressure. Some participants question the intermediate steps and encourage showing more detailed workings to facilitate understanding.

Discussion Status

Participants are engaging with the original poster's calculations, with one member suggesting that the approach appears correct. There is an ongoing exploration of how to properly format equations and calculations.

Contextual Notes

The original poster assumes that each tire supports a quarter of the car's weight and is converting pressure units appropriately. There is mention of rounding with significant digits, indicating attention to detail in the calculations.

dumguy
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[SOLVED] my anwers does not look right

Homework Statement


A car has a weight of 15000N. If the pressure of each of the tires is observed to be 225KPa, calculate the area of each tire that is in contact with the pavement.


Homework Equations


A=F/P


The Attempt at a Solution



A=0.01666sq.meters
 
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Welcome to PF. Could you show your working an intermediate steps, please. You are more likely to be helped if you do this, since people will be able to follow your working rather than do it themselves.
 
Just learning the language for inputting my equations, exponents and all that.
 
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dumguy said:
I assume that each tire supports 1/4 of the weight of the car and that works out to be 3750N.I convert the tire pressure from 225KPa into N/sq.meters and do the equation A=F/P. This gives me 0.01666sq.meters. All of which I am doing in SI and rounding with significant digits. I just don't know how to type that.

That looks fine to me.
 

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