Miri said:When it has 1.2g helium in it. But I don't know how I can calculate this...
Miri said:I don't know what the conditions are. I just know that it has to float. And why do we need a net force? And how would we calculate it? Thx for your patience
Miri said:So the volume needed to lift the mass of the balloon shell itself is calculated like this: 7.5*10^-3kg / 1.29kg/m^3=0.006m^3. But what's the point now? Should I calculate 7.5*10^-3kg / 0.18kg/m^3=0.04m^3 and then??
To calculate the amount of helium needed for a balloon to float, you need to know the weight of the balloon and the lift capacity of the helium. You can then use the formula: (weight of balloon / lift capacity of helium) x 100 = amount of helium needed in percent.
The lift capacity of helium is the amount of weight that one cubic foot of helium gas can lift. This value varies depending on factors such as temperature and altitude, but a commonly used estimate is 1 gram per liter.
Temperature and altitude can affect the amount of helium needed for a balloon to float because they impact the lift capacity of the gas. Higher temperatures and altitudes result in lower lift capacities, meaning more helium will be needed to achieve the desired lift for the balloon.
A standard-sized balloon typically requires about 14.1 grams of helium to lift 1 gram of weight. Therefore, for a balloon that weighs 28 grams, you would need approximately 400 grams of helium.
Yes, the amount of helium needed for a balloon to float can vary depending on various factors such as the weight and size of the balloon, temperature, and altitude. It is important to calculate the specific amount needed for each individual balloon to ensure it will float properly.