Tagged Questions
0
votes
2answers
112 views
What mechanisms exist for generating lift on a static object?
What mechanisms exist for generating lift on a static object?
Condition is: Other than propellers
I know that generating lift on a static object in a sense of anti-gravity for e.g. drone is not ...
3
votes
1answer
117 views
Does a fly get brought up to speed with a bus?
Consider a scenario where a bus is moving at a constant speed and a fly enters through a window,the fly is also flying at a constant speed.
Since the bus is not in contact with the fly and neither is ...
3
votes
1answer
1k views
What does the wind speed have to be to blow away a person?
With the approaching hurricane, I am curious about what would happen if I go outside, in particular whether the wind gusts might be fast enough to blow me away. How fast would the wind have to be to ...
3
votes
2answers
228 views
At what g is terminal velocity not terminal?
How weak would gravity need to be in order for a human to reliably survive the terminal velocity of falling through air?
(Context: watching scifi on a space station with a variety of artificial ...
1
vote
1answer
68 views
How do we describe the relationship of balloon size and related lift?
We know that hydrogen and helium are lighter that air.
Therefore it is certain that they would create a lifting force when enclosed in a balloon.
How do we describe the relationship of balloon size ...
