If there is a helium balloon, its volume is 2000m to the third power, and the air density is 1.3kg/m3, what is the buoyancy of the helium balloon in the air

If there is a helium balloon, its volume is 2000m to the third power, and the air density is 1.3kg/m3, what is the buoyancy of the helium balloon in the air

F floating = ρ air GV row = 1.3kg/m & # 179; × 10N / kg × 2000m & # 179; = 26000n

The volume of the airship filled with hydrogen staying in the air is 3 × 103m3, the density of air is 1.29kg/m3, the density of hydrogen is 0.09 kg / m3, and the weight of the airship is 300N? （g=10N/kg）

Buoyancy of airship: F = ρ air GV row = 1.29kg/m3 × 10N / kg × 3 × 103m3 = 38700n weight of hydrogen in airship: g = mg = ρ GV = 0.09kg/m3 × 10N / kg × 3 × 103m3 = 2700n weight of cargo: G ′ = 38700n-2700n-300n = 35700n answer: weight of cargo: 35700n

The volume of the airship filled with hydrogen in the air is 3000 cubic meters, and the weight of the collar is 300N. What is the weight of the cargo?

The resultant force on the object staying in the fluid (gas and liquid) is zero
Airships are subject to buoyancy and gravity
N+G=ρVg
G+300N=1.297kg/m^3*3000*9.8
Cargo weight g = 37831.8n