Maximum weight that helium balloon can lift

Thread starter Raiden9
Start date Dec 12, 2005
Tags

Balloon Helium Lift Maximum Weight

AI Thread Summary

To determine the maximum weight a helium balloon can lift, the density of helium and the volume of the balloon must be considered. The balloon's volume can be calculated using the formula for the volume of a sphere, which is V = (4/3)πr³. The buoyant force can then be found using the equation Fb = pgV, where p is the density of air and g is the acceleration due to gravity. After calculating the buoyant force, subtract the weight of the balloon itself to find the maximum lift capacity. Properly applying the density values is crucial for accurate results.

Dec 12, 2005

Raiden9

Hi. I have been trying to do this question for about an hour now...

A 0.12 kg balloon is filled with helium (density-0.179). If the balloon is a sphere with a radius of 5.2m what is the maximum weight it can lift.

I tried using the P=M/V then Fb=pgV...No luck...Help..

Physics news on Phys.org

Dec 12, 2005

Raiden9

Oh dear...The answer was I forgot to use the density...Silly me..

Thread 'Power of a thin lens in a medium is 1/fₘ or μₘ/fₘ ?'

Here is what I tried This question was actually asked in one of our engineering entrances. The answer was 1D. My teachers say that we have to use μₘ/fₘ to get to this answer. I cannot understand why. I'll be really glad if you could tell me the exact definition of power (numerically) that works in all scenarios.

View full post »

Thread 'Voltmeter readings for this circuit with switches'

TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...

View full post »

Thread 'Trying to understand the logic behind adding vectors with an angle between them'

My initial calculation was to subtract V1 from V2 to show that from the perspective of the second aircraft the first one is -300km/h. So i checked with ChatGPT and it said I cant just subtract them because I have an angle between them. So I dont understand the reasoning of it. Like why should a velocity be dependent on an angle? I was thinking about how it would look like if the planes where parallel to each other, and then how it look like if one is turning away and I dont see it. Since...

View full post »