Answer:
10.208 kPa
Step-by-step explanation:
The weight of the truck is 15,000 kg, which can be converted to Newtons using the conversion factor 1 kg = 9.8 N:
Weight of the truck = 15,000 kg × 9.8 N/kg = 147,000 N
The area of all tires touching the ground is 0.8 m².
The pressure exerted by one tire on the ground can be calculated using the formula:
pressure = force / area
where force is the weight of the truck divided by the number of tires (18), and area is the combined area of all tires touching the ground (0.8 m²).
So, the pressure exerted by one tire can be calculated as follows:
force per tire = weight of the truck / number of tires
force per tire = 147,000 N / 18 = 8,166.67 N
pressure = force per tire / area
pressure = 8,166.67 N / 0.8 m² = 10,208.33 Pa
Finally, we can convert this pressure to kilopascals (kPa) by dividing by 1000:
pressure = 10,208.33 Pa / 1000 = 10.208 kPa
Therefore, one tire of the 18 wheel truck exerts a pressure of 10.208 kPa on the ground.