Question

ПОМОГИТЕ СРОЧНО!!! РЕШИТЕ ЗАДАЧИ С ДАНО И С ФОРМУЛАМИ 1.определите массу груза, который может поднять в воздух воздушный шар объемом 400м³, наполненный гелием, если подъемная сила равна 1 м³ гелия равна 11,1 Н. 2. Найдите объем шара, наполненного гелием и имеющего подъемную силу 450 Н. Массу оболочки и гондолы считать равным 45 кг. ДАМ ВСЕ БАЛЫ ТОЛЬКО С ДАНО И ФОРМУЛАМИ!!!

Answer 1

2) p1=0,178 кг/м^3 – плотность гелия при 20 С
p2=1,204 кг/м^3 — плотность воздуха при 20 С
Чтобы поднять только оболочку и гондолу нужен объём
V=m/(p2-p1)=44 м^3
V=Pп/g*(p2-p1)=44м^3

1) подъёмная сила гелия F = 400 * 11,1 = 4440 Н. Поднимаемая масса (из выражения для сиды тяжести F = mg) равна m = F/g = 4440 / 10 = 444 кг

Answer 2

Task 1: Determining the mass of the load that an airship can lift

To determine the mass of the load that an airship can lift, we need to use the concept of buoyancy. Buoyancy is the upward force exerted on an object immersed in a fluid, in this case, the air. The buoyant force is equal to the weight of the fluid displaced by the object.

The formula for calculating the buoyant force is:

Buoyant force = Density of fluid x Volume of fluid displaced x Acceleration due to gravity

In this case, the fluid is helium, and we are given the volume of the airship and the buoyant force of 1 m³ of helium.

Given: - Volume of the airship (V) = 400 m³ - Buoyant force of 1 m³ of helium (B) = 11.1 N

To find the mass of the load, we need to calculate the weight of the fluid displaced by the airship. Since the buoyant force is equal to the weight of the fluid displaced, we can equate the two:

Weight of fluid displaced = Buoyant force

The weight of the fluid displaced is equal to the mass of the fluid displaced multiplied by the acceleration due to gravity:

Weight of fluid displaced = Mass of fluid displaced x Acceleration due to gravity

Since the buoyant force is equal to the weight of the fluid displaced, we can equate the two equations:

Mass of fluid displaced x Acceleration due to gravity = Buoyant force

Now we can solve for the mass of the fluid displaced (which is the same as the mass of the load):

Mass of fluid displaced = Buoyant force / Acceleration due to gravity

Substituting the given values:

Mass of fluid displaced = 1 m³ x 11.1 N / 9.8 m/s²

Calculating the mass of the fluid displaced:

Mass of fluid displaced = 1.13 kg

Therefore, the mass of the load that the airship can lift is approximately 1.13 kg.

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