Question

1) Мальчик массой 56 к оказывает давление на опору. Рассчитайте, какое давление он оказывает, если общая площадь его подошв составляет 370 см. (Ответ округлить до целого)​

Answer 1

Ответ:

15135 Па

Объяснение:

F=mg=56kg*10 H/kg =560 H

P= F:S = 560 : 0,037 m2= 15135 Па

Answer 2

Calculation of Pressure

To calculate the pressure exerted by the boy, we can use the formula:

Pressure = Force / Area

Given that the boy has a mass of 56 kg and is exerting pressure on a support, we need to calculate the force exerted by the boy. The force can be calculated using the formula:

Force = mass * acceleration due to gravity

The acceleration due to gravity is approximately 9.8 m/s^2.

Let's calculate the force first:

Force = 56 kg * 9.8 m/s^2

Using a calculator, we find that the force exerted by the boy is approximately 549.6 N (Newtons).

Next, we need to calculate the area of the boy's foot. The given area is in square centimeters, so we need to convert it to square meters. Since 1 square meter is equal to 10,000 square centimeters, we can convert the area as follows:

Area = 370 cm^2 * (1 m^2 / 10,000 cm^2)

Simplifying the equation, we get:

Area = 0.037 m^2

Now, we can calculate the pressure exerted by the boy:

Pressure = Force / Area

Substituting the values we calculated earlier:

Pressure = 549.6 N / 0.037 m^2

Using a calculator, we find that the pressure exerted by the boy is approximately 14,851 Pa (Pascals).

Rounding the answer to the nearest whole number, the boy exerts a pressure of approximately 14,851 Pa on the support.