- #1
Joppe
- 4
- 0
Ok, propably everyone here knows that IN THEORY it is possible for a human to fly. This question has been bugging me a lot and I know it can be solved using some kind of aerial physics (Dont know the term :D).
Therefore my question is: How fast must 75 kilograms weighing human wave his hands up and down while standing like a cross to fly above the ground.
Here is a picture of the position:
http://images.jupiterimages.com/common/detail/96/35/22833596.jpg
Let's assume that an average sized hand is about 20cm*10cm = 200cm^2 and the arm itself is about 60cm*10 = 600cm^2 which means that the total waveable parts make 800cm^2 and for both hands its 1600cm^2. Therefore the surface that is waved up and down is 1600cm^2 and I need figured out how fast must that sized object go up and down to lift a 75kg weighing human off the ground. The hands will be waved at the range of 1 meter (from hips to a bit above head).
This will be done in normal air, in water it doesn't take alot, like 1 move per second.
I doubt this will be solved for me but if anyone would atleast try, this is a physics forum isn't it :) I would like the answer's units to be: 1 unit = 1 times hands from down to up and then back down.
For now let's assume that the person turns his hands when lifting his hands so he will not create the same force to push him back to ground he just created to get up from the ground. Let's say when he puts his hands back up from down it shall be arms = 600cm^2 and hands = 40cm^2 (hand on it's side for good aerodynamic ability).
I wish someone could answer this :)
THANKS
-Joppe
Therefore my question is: How fast must 75 kilograms weighing human wave his hands up and down while standing like a cross to fly above the ground.
Here is a picture of the position:
http://images.jupiterimages.com/common/detail/96/35/22833596.jpg
Let's assume that an average sized hand is about 20cm*10cm = 200cm^2 and the arm itself is about 60cm*10 = 600cm^2 which means that the total waveable parts make 800cm^2 and for both hands its 1600cm^2. Therefore the surface that is waved up and down is 1600cm^2 and I need figured out how fast must that sized object go up and down to lift a 75kg weighing human off the ground. The hands will be waved at the range of 1 meter (from hips to a bit above head).
This will be done in normal air, in water it doesn't take alot, like 1 move per second.
I doubt this will be solved for me but if anyone would atleast try, this is a physics forum isn't it :) I would like the answer's units to be: 1 unit = 1 times hands from down to up and then back down.
For now let's assume that the person turns his hands when lifting his hands so he will not create the same force to push him back to ground he just created to get up from the ground. Let's say when he puts his hands back up from down it shall be arms = 600cm^2 and hands = 40cm^2 (hand on it's side for good aerodynamic ability).
I wish someone could answer this :)
THANKS
-Joppe
Last edited by a moderator: