Let's assume you are talking about filling a balloon with helium and using it to lift a 500 pound weight. Unfortunately, there are more factors you need to consider before you can have this question resolved. You need to know the atmospheric temperature, the density of the outside air, the temperature of the helium you're using, and the starting point in relation to the Earth's center of gravity. Also, are you including the weight of the balloon and the rest of your apparatus in the 500 pound figure, if not you need to allow for that. In other words, if you are starting from the top of Everest at 30 below zero, the amount of helium you'll need varies greatly from that of a balloon starting in Death Valley at 120 degrees.
1791.044776119403 cubic feet176 / 0.067 = 1791.044776119403
A standard 11-inch helium balloon can lift approximately 14 grams or 0.5 ounces. The lifting capacity of a helium balloon can vary depending on factors such as balloon size, helium volume, and weight of the attached object.
Assume we're surrounded by air at standard temperature and pressure, and the helium is also at S.T.P. The weight of a helium balloon of volume V would be equal to the density of helium multiplied by V multiplied by g (the acceleration due to gravity), i.e. VgρHe, and the weight of air displaced is similarly Vgρair. By Archimedes' principle, the balloon experiences an upward force equal to the difference, Vg(ρair - ρHe). If you want to lift a mass m then we must have Vg(ρair - ρHe) > mg, which gives: V > m / (ρair - ρHe). Setting m to 2 lbs (which is 0.91 kg) and plugging in the S.T.P. densities for air (typically 1.2 kg/m3) and helium (0.18 kg/m3) you get: V > 0.89 m3, i.e you need at least 890 litres (32 cubic feet) of helium at standard temperature and pressure.
Compressed helium does not lift more than regular helium. The lifting force generated by a gas is determined by its density, regardless of whether it is compressed or not. Helium is already a very low-density gas, so compressing it would not significantly increase its lifting capacity.
The number of helium balloons needed to lift a person will depend on the person's weight. On average, it takes about 3-5 large helium balloons to lift 1 pound. For example, to lift a 150-pound person, you would need roughly 450-750 balloons. It is important to consider factors like air currents and ceiling height when attempting to lift objects with helium balloons indoors.
You would need approximately 65 cubic feet of helium to lift 1 pound. Helium provides lift because it is lighter than the surrounding air, creating buoyancy.
To lift 400 pounds, you would need approximately 74.3 cubic feet of helium. Helium is lighter than air, so it provides lift when contained in a balloon.
Depends on the weight. Check the MythBusters website, they did an experiment on this.
1791.044776119403 cubic feet176 / 0.067 = 1791.044776119403
1 cubic meter helium lifts 1 Kg weight at sea level.
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.
depends how big the helium balloon is and how many
Let's ignore the mass of the balloon itself and the string/rope/harness/whatever that connects it to the person. We're also going to ignore the compression of the balloon; we can assume it's mylar or something and the helium inside is at normal atmospheric pressure (if the balloon is compressing the helium, it will need to be bigger, since the density of the helium goes up as the pressure increases).At around room temperature and ordinary pressures, helium has a density of about 0.164 kilograms per cubic meter. Under the same conditions, air has a density of a little under 1.2 kilograms per cubic meter. For a ballpark estimate, therefore, we can say that a balloon with a volume of 1 cubic meter will lift roughly 1 kilogram, which makes the calculation easy: to lift a 175 lb (80 kg) person, you need an 80 cubic meter balloon, which if spherical would have a radius of 2.67 meters or a little over 8 feet 9 inches.A helium balloon 18 feet across should be sufficient to lift 175 pounds. Now you know why blimps are HUGE.
10000000 helium balloons
helium can lift about 0.067 pounds per cubic foot because that is the difference between its weight and it's upward forceso120 / 0.067 = 1791.044776119403 cubic feet of helium assuming that it is contained by baloonswithout baloons, the helium will just simply get trapped in the atmosphere.
A standard 11-inch helium balloon can lift approximately 14 grams or 0.5 ounces. The lifting capacity of a helium balloon can vary depending on factors such as balloon size, helium volume, and weight of the attached object.
To inflate a balloon to a desired size, we need to know the volume and required lift. Typically a 9-inch helium-filled balloon can lift about 8g of weight. If you want to increase the lift, you can add more helium.