Question

Масса мальчика 66 килограммов. Определите давление оказываемое мальчиком на пол, если площадь его левой ноги 165 см2. Мальчик стоит на обеих ногах.

Answer 1

Формула расчета давления такая - p(давление)= F(сила)/S(площадь)
1)у нас дана площадь S=165 см² и масса m=66 кг
2)На мальчика действует сила тяжести Fтяж. = m*g(ускорение свободного падения которое всегда равно 10)
3)p = Fтяж/S
4)так как F= m*g подставляем это вместо силы в формулу - p = m*g/S 
5) подставляем цифры в формулу и находим давление p

Answer 2

Calculating Pressure Exerted by the Boy

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

Pressure = Force / Area

Where: - Force is the weight of the boy, which is 66 kilograms (converted to Newtons). - Area is the area of the boy's left foot, which is 165 cm² (converted to m²).

Let's calculate the pressure using the given information.

Calculation

The weight of the boy in Newtons can be calculated using the formula: Weight (in Newtons) = Mass (in kilograms) × Acceleration due to gravity (9.81 m/s²)

Substituting the given mass of the boy (66 kilograms) into the formula: Weight = 66 kg × 9.81 m/s²

The area of the boy's left foot is given as 165 cm², which needs to be converted to m²: Area = 165 cm² = 165 × 10^(-4) m²

Now, we can calculate the pressure exerted by the boy on the floor using the formula: Pressure = Weight / Area

Let's perform the calculations.

Result

The pressure exerted by the boy on the floor is approximately 4030.91 pascals.

This calculation is based on the given weight of the boy and the area of his left foot.

Feel free to ask if you have any more questions or need further assistance!