0
-- The density of air at 1 atm pressure and 0°C is 1.2922 kg/m3.
The density of hydrogen under the same conditions is 89 gm/m3.
The difference is 1.2032 kg/m3.
-- On or near the surface of the Earth, that 1.2032 kg weighs 2.6526 pounds.
-- For 50 pounds of buoyancy, you need 50/2.6526 = 18.85 m3 of buoyancy.
-- That's 665.7 cubic feet.
-- That's a weightless, spherical balloon 10.8 feet in diameter.
-- All of that just exactly lifts your 50-lbs off the ground in sea-level air.
If your balloon is not weightless, and if you want to keep rising as the
air gets thinner, you'll need some more.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
How much hydrogen is enough to lift up 1 kg weight from the ground?
The weight of standard air is 1.2256 Kg/ Cubic Meter The weight of hydrogen is 0.0857 Kg/ Cubic Meter The weight of helium is 0.1691 Kg/ Cubic Meter Subtracting the weight of hydrogen from air gives you the gross buoyant lift of hydrogen as 1.1399 Kg/Cubic Meter Subtracting the weight of helium from air gives you the gross buoyant lift of helium as 1.0565 Kg/Cubic Meter These values are variable under altitude, pressure, temperature, humidity and purity of gas. Hope this helps you.
What was the total weight of the Hindenburg?
I work it out to be 130.1 tones. I worked this out thus:- Hindenburg carried a gas volume of 7,062,000 cubic feet of Hydrogen. This volume of hydrogen, would produce 242.2 tons of gross lift and as Hindenburg's useful lift (the lift left after you subtract the weight of the structure from the gross lift) is documented at 112.1 tons. Thus 242.2-112.1 = 130.1 tones (the weight of the craft).
How much hydrogen gas required to lift 1kg weight?
I believe it is approximately 1.13 cubic meters (1.13 litres will lift 1 gram; do the math.
How much helium is needed to lift 1 lb?
Approximately 15 cubic feet of Helium.
How many pounds are there in 16 cubic feet?
None. A pound is a measure of mass while a cubic foot is a measure of volume. The two measure different things and it makes no sense at all to try to convert from one to the other. You could easily lift 16 cubic feet of air using 1 hand but 16 cubic feet of lead is quite another matter!
Who determined 50lbs is a safe limit to lift for one person?
It depends upon your strength and conditioning, as well as the configuration of the object to be lifted.
If you are five months pregnant whats the most you can lift?
This depends on if you were lifting things from day one. If you are use to say lifting 50lbs at a time then lifting 50lbs will not bother you nor the baby at 5months. But if you do not do any lifting, then it isn't a good idea to up and start lifting things that are heavy. Most doctors would say not to lift over 20lbs. That is about the weight of a toddler.
How much helium is needed to lift an average human body?
Depends on the weight. Check the MythBusters website, they did an experiment on this.
How big of a hot air balloon to lift 800lb?
Not very big at all compared to regular hot air balloons. Maybe as small as 20 cubic feet
How much does a 20 cubic feet refrigerator weigh?
Depends on the color. And the brand, model, manufacturing materials, etc. Don't try to lift one yourself, get a cart or dolly.
How do you turn volume into a cubic foot?
Cubic feet is a measure of volume so you multiply the length x width x height if you have them. Many 3 dimensional objects don't work that way. For example, you can measure the air in a big balloon in cubic feet, but there formula does not work. So there is on one formula to find volume in cubic feet. Perhaps you are interested in converting cubic inches to cubic feet? For this you need to know that 1 cubic inches = 0.000578703704 cubic feet.
What is the element with the most lift?
Hydrogen, being the lightest element, would provide the most lift.
