The gauge pressure in each of the 4 tyres of a car with a mass of 1800 kg is 210 kPa. The area (in m2) of each tyre that is in contact with the ground is:
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Gauge pressure is the pressure above atmospheric pressure, so we need to convert it to absolute pressure. Show more…
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The gauge pressure in each of the four tires of an automobile is 240 kPa. If each tire has a "footprint" of 190 cm$^2$ (area touching the ground), estimate the mass of the car.
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