Question

Масса мальчика 66 килограмм Определите давление оказываемое чекам на пол если площадь левой ноги 65 см в квадрате мальчик стоит на обеих ногах

Answer 1

Ошибка там у тебя! Там площадь левой ноги не 65, а 165.
Ладно так уж и быть решу)

Answer 2

Calculation of Pressure

To determine the pressure exerted by the boy on the floor, we need to use the formula:

Pressure = Force / Area

In this case, the force is equal to the weight of the boy, which is given as 66 kilograms. We need to convert this weight to Newtons, as the SI unit of force is Newton (N). The acceleration due to gravity is approximately 9.8 m/s^2.

Converting the weight of the boy to Newtons:

Weight = Mass * Acceleration due to gravity

Weight = 66 kg * 9.8 m/s^2

Weight = 646.8 N

Now, we need to calculate the area of the boy's left foot. The area is given as 65 square centimeters. We need to convert this to square meters, as the SI unit of area is square meters.

Converting the area of the left foot to square meters:

Area = 65 cm^2 * (1 m / 100 cm)^2

Area = 0.0065 m^2

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

Pressure = Force / Area

Pressure = 646.8 N / 0.0065 m^2

Pressure ≈ 99,507.69 Pa

Therefore, the pressure exerted by the boy on the floor is approximately 99,507.69 Pascal (Pa).