The discussion revolves around the calculated velocity required to lift a person in a wind tunnel, with participants exploring the physics behind air mass, velocity, and forces involved in lifting. The scope includes theoretical calculations, conceptual understanding of air dynamics, and practical applications related to wind tunnels and natural phenomena like thunderstorms.
Participants express differing views on the calculations and concepts presented, with no consensus reached on the validity of the initial formula or the implications of the mass of air used. The discussion remains unresolved regarding the correct approach to understanding the forces at play.
Participants have not fully addressed the assumptions behind the mass of air and its interaction with a person in the wind. There are unresolved questions about the applicability of momentum in this context and the specific conditions under which the calculations are made.
It depends on the size of the wing...Suyash Singh said:
i was talking about thunderstormberkeman said:
Looks like 60-80mph is pretty close to the limit...Suyash Singh said:
I thought thatcjl said:
Hey, who you calling "nobody"?!cjl said:
I meant directly addressing the calculation rather than the end result. You did address a number of the factors thoughberkeman said:Hey, who you calling "nobody"?!
Momentum isn't the worst place to start here, but I'll address that more after we look at the mass some more. 10,000 kg is about right if you're looking at the entire column of air from the ground up to space, but what bearing would that have on its ability to lift a person? If a person is standing in the wind, what mass of air actually interacts with them?Suyash Singh said:
On that track you will find out what happens when you hit somebody with 10 tons of air in one go. (But the equation is still wrong.)Suyash Singh said:
conservation of momentumRive said:
That's an excellent tool for collisions, for example: but for this, you better to swim instead.Suyash Singh said:
