Question

Какое давление производит на пол мальчик массой 35кг, если общая площадь подошв его ботинок,соприкасающихся с полом, равна 200см в квадрате?

Answer 1

200см^2=0.02м^2
1) P(вес)=35кг * 10Н/кг=350Н
2)р(давление)=350Н : 0.02см^2=17500Па

Answer 2

Calculating Pressure Exerted by a Boy on the Floor

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

Pressure (P) = Force (F) / Area (A)

Where: - Force (F) is the weight of the boy, which is the mass of the boy multiplied by the acceleration due to gravity (9.8 m/s^2). - Area (A) is the total area of the soles of his shoes in contact with the floor.

Calculating the Force Exerted by the Boy

The weight of the boy can be calculated using the formula:

Weight (W) = Mass (m) × Acceleration due to gravity (g)

Given that the mass of the boy is 35 kg, and the acceleration due to gravity is approximately 9.8 m/s^2, we can calculate the weight.

Weight (W) = 35 kg × 9.8 m/s^2

Using the above calculation, we find that the weight of the boy is 343 N (Newton).

Calculating the Pressure

Now, we can calculate the pressure exerted by the boy on the floor using the formula:

Pressure (P) = Force (F) / Area (A)

Given that the area of the soles of his shoes in contact with the floor is 200 cm^2, we need to convert it to square meters before using it in the formula.

Area (A) = 200 cm^2 = 0.02 m^2

Now, we can calculate the pressure using the formula:

Pressure (P) = 343 N / 0.02 m^2

By performing the above calculation, we find that the pressure exerted by the boy on the floor is 17150 Pascals (Pa).

Therefore, the pressure exerted by the boy on the floor is 17150 Pascals.

I hope this helps! If you have any further questions, feel free to ask.