Concept explainers
An automobile is supported by four tires inflated to a gauge pressure of 180 kPa. The area of contact of each of the tires (ignoring the effects of tread thickness) is
). Estimate the mass of the car in kilograms.
The mass of the car .
Answer to Problem 59A
The mass of the car is
Explanation of Solution
Given:
Gauge pressure of each tires = 180Pa
Total area of tire contact = 0.076 m2
Formula used:
In order to support an automobile which is lying on the road, it's weight should be balanced by the force exerted by the gauge pressure. Mathematically, it is expressed as,
Here,
Calculation:
Substitute
Conclusion:
Therefore, the mass of the car is
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Conceptual Physics: The High School Physics Program
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