Question

СРОЧНО!!!! Помогите 7 класс. Зная свою массу и площадь ботинка, вычислите, какое давление вы производите при ходьбе и какое - стоя на месте. Масса - 45 кг Размер ноги - 42Неполных клеток - 125Полных клеток - 1025

Answer 1

m=45кг

S=(1025+60.5)x0.25=271,375=27,138м2
p1=F/S стоя

p2=F/2xS при ходьбе

F=mxg

Решение

F=45x9.8=441

p1=441/27.138=16,25027636524431 Па
p2=441/(27.138х2)=441:54,276=8,125138182622153Па

Объяснение:

Answer 2

Calculation of Pressure

To calculate the pressure exerted by a person while walking and standing, we need to know the mass of the person and the area of the shoe. In this case, the given information is as follows:

- Mass: 45 kg - Shoe size: 42 (125 incomplete cells and 1025 complete cells)

To calculate the pressure, we can use the formula:

Pressure = Force / Area

In this case, the force can be calculated using the mass and acceleration due to gravity (9.8 m/s^2). The area can be approximated using the shoe size.

Let's calculate the pressure for both walking and standing scenarios.

Walking Scenario

To calculate the pressure while walking, we need to consider the force exerted by the person's weight. The force can be calculated using the formula:

Force = Mass * Acceleration due to gravity

Given that the mass is 45 kg and the acceleration due to gravity is 9.8 m/s^2, we can calculate the force:

Force = 45 kg * 9.8 m/s^2

Now, let's calculate the area of the shoe. Since the shoe size is given as 42, we can approximate the area by assuming the shoe is rectangular and using the average length and width of a shoe of that size. However, it's important to note that the accuracy of this approximation may vary depending on the specific shoe design.

Once we have the force and the area, we can calculate the pressure using the formula mentioned earlier.

Standing Scenario

To calculate the pressure while standing, we can use the same formula as in the walking scenario. The only difference is that the force will be the weight of the person when standing still.

Let's calculate the pressure for both scenarios.

Calculation:

Walking Scenario:

Force = 45 kg * 9.8 m/s^2

Area = (Approximate area of shoe based on size 42)

Pressure = Force / Area

Standing Scenario:

Force = 45 kg * 9.8 m/s^2

Area = (Approximate area of shoe based on size 42)

Pressure = Force / Area

Please note that the calculation of the area based on shoe size is an approximation, and the actual pressure exerted may vary depending on various factors such as shoe design, weight distribution, and walking style.

Unfortunately, the specific area calculation based on shoe size is not available in the search results. However, you can use the given shoe size to estimate the area by assuming a rectangular shape for the shoe sole and using the average length and width of a shoe of that size.