Question

Автомобиль оказывает давление на дорогу 90 кПа. Чему равна площадь соприкосновения колёс с дорогой,если масса автомобиля 1,8т

Answer 1

P=f/s
P=90 kPa = 90 000 Pa
F= 1800 kg * 10H/kg = 18000 H
S= f/p
S= 0.2 m2

Answer 2

Calculation of Contact Area between Wheels and Road

To calculate the contact area between the wheels of a car and the road, we need to know the pressure exerted by the car on the road and the weight of the car.

Given: - Pressure exerted by the car on the road: 90 kPa - Mass of the car: 1.8 tons

To calculate the contact area, we can use the formula:

Area = Force / Pressure

The force exerted by the car on the road is equal to the weight of the car, which can be calculated using the formula:

Force = Mass x Gravity

Where: - Mass is the mass of the car - Gravity is the acceleration due to gravity (approximately 9.8 m/s^2)

Let's calculate the contact area:

Step 1: Convert the mass of the car from tons to kilograms: 1 ton = 1000 kilograms So, the mass of the car is 1.8 tons = 1800 kilograms.

Step 2: Calculate the force exerted by the car on the road: Force = Mass x Gravity Force = 1800 kg x 9.8 m/s^2

Step 3: Calculate the contact area: Area = Force / Pressure Area = (1800 kg x 9.8 m/s^2) / 90 kPa

Now, let's calculate the contact area using the given values.

Calculation:

Step 1: Convert the mass of the car from tons to kilograms: Mass of the car = 1.8 tons = 1800 kilograms

Step 2: Calculate the force exerted by the car on the road: Force = Mass x Gravity Force = 1800 kg x 9.8 m/s^2 = 17640 N

Step 3: Calculate the contact area: Area = Force / Pressure Area = 17640 N / 90000 Pa = 0.196 m^2

Therefore, the contact area between the wheels of the car and the road is approximately 0.196 square meters.

Please note that this calculation assumes that the pressure is evenly distributed across the contact area between the wheels and the road. In reality, the contact area may vary depending on factors such as tire pressure, tire design, and road conditions.