Question

Автомобиль массой 4 тонны имеет площадь опоры 1-ого колеса 200см2 (колёс 4) . Найти давление автомобиля. И пожалуйста составьте краткую запись.

Answer 1

Дано :
S = 200см2 * 4
m = 4т = 4000кг
Найти :
Р - ?
Решение :
P = F/S
S = 200 * 4 = 800см2
S = 800см2 = 0,08м2
F = 4000 * 10 = 40000н
P = 40000 : 0,08 = 500000Па = 500кПа
Ответ : Давление автомобиля равно 500кПа

Answer 2

Calculating Pressure of the Car

To calculate the pressure of the car, we can use the formula:

Pressure = Force / Area

Where: - Force is the weight of the car (mass * acceleration due to gravity) - Area is the area of contact of the wheel with the ground

Given: - Mass of the car = 4 tonnes = 4000 kg - Area of contact of one wheel = 200 cm^2

First, let's convert the mass of the car from tonnes to kilograms: - 1 tonne = 1000 kg - Therefore, 4 tonnes = 4000 kg

Now, we can calculate the force exerted by the car on the ground: - The acceleration due to gravity, denoted as g, is approximately 9.81 m/s^2 - Force = Mass * Acceleration due to gravity

Let's calculate the force: - Force = 4000 kg * 9.81 m/s^2

Now, we can calculate the pressure exerted by the car on the ground using the given area of contact: - Pressure = Force / Area

Let's calculate the pressure using the given values.

Calculation

- Mass of the car = 4000 kg - Area of contact of one wheel = 200 cm^2 - Acceleration due to gravity, g = 9.81 m/s^2

First, calculate the force: - Force = 4000 kg * 9.81 m/s^2 - Force = 39240 N

Now, calculate the pressure: - Pressure = Force / Area - Pressure = 39240 N / (200 cm^2 * 4) - Pressure = 39240 N / 800 cm^2 - Pressure = 49.05 N/cm^2

Answer

The pressure exerted by the car on the ground is approximately 49.05 N/cm^2.