The balloon has a volume of 1000 m3. Find the lift of the ball if it is filled with hydrogen.

To find the value of the lift of the considered balloon, we use the formula: Fп = Fa – Fт = g * V * (ρв – ρH2).

Constants and variables: g – gravitational acceleration (g = 9.81 m / s2); V is the volume of the balloon (V = 1000 m3); ρw – air density (ρw = 1.204 kg / m3); ρH2 is the density of hydrogen (ρH2 = 0.09 kg / m3).

Let’s perform the calculation: Fп = g * V * (ρв – ρH2) = 9.81 * 1000 * (1.204 – 0.09) = 10928.34 N ≈ 10.9 kN.

Answer: The lifting force of the balloon in question is 10.9 kN.