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BeiW
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Gauge Pressure of Tires -- find car mass
The gauge pressure in each of the four tires of an automobile is 240 kPa. If each tire has a "footprint" of 22.0 cm-squared, estimate mass of the car.
P=240 kPa
A=22.0 cm-squared
g=9.8 m/s^2
P=F/A
1 atm = 1.013x(10^5) N/m^2 = 101.3 kPa
A=.22 m^2 for each tire
P = 2.4x(10^5) N/m^s = F/A = (mg)/A for each tire
m= (PA)/g = (2.4x(10^5))(.22) / (9.8) = 5387.76 kg?
Homework Statement
The gauge pressure in each of the four tires of an automobile is 240 kPa. If each tire has a "footprint" of 22.0 cm-squared, estimate mass of the car.
P=240 kPa
A=22.0 cm-squared
g=9.8 m/s^2
Homework Equations
P=F/A
1 atm = 1.013x(10^5) N/m^2 = 101.3 kPa
A=.22 m^2 for each tire
The Attempt at a Solution
P = 2.4x(10^5) N/m^s = F/A = (mg)/A for each tire
m= (PA)/g = (2.4x(10^5))(.22) / (9.8) = 5387.76 kg?