support your answer with proof.
2007-05-06 12:36:23 · 5 answers · asked by msaid_23 1 in Science & Mathematics ➔ Other - Science
it rises first due to the sudden rush of air under the canopy when weight overcomes the rush of air it gently falls to earth
2007-05-06 12:45:14 · answer #1 · answered by robforgotit 2 · 0⤊ 1⤋
This is speculation:
There may be a spring like action associated with the shrouds stretching as the person undergoes a multi g deceleration. Also upon initial opening and braking of the fall, air under the canopy may become slightly pressurized especially as the chutes occupant is a multiple of their normal weight .
As the stretched shrouds pull back on the person and snap back to there original length there may be a slight momentary upward pull which exerts a momentary negative g component to the person slightly lowering their weight against the pressurized air under the canopy.. In any case the occupant has now returned to their normal 1 g weight and any pressurized air trapped under the canopy from the initial braking could certainly provide a momentary lift .
That might explain a brief upward movement of the canopy upon initial opening.
2007-05-07 01:29:46 · answer #2 · answered by MarkG 7 · 0⤊ 0⤋
it does not rise first. The camera is still free-falling when you see the parachute open up which makes it *look* like it is going up.
2007-05-06 19:42:21 · answer #3 · answered by mdcbert 6 · 2⤊ 0⤋
Sorry. Your premise is incorrect. This does not happen, because a force would have to operate on the parachute to create this effect. No such force occurs.
2007-05-06 20:54:07 · answer #4 · answered by Top Gun 3 · 0⤊ 0⤋
It actually does not rise, it just slows your rate of descent very quickly, making it feel that you went up. The sudden resistance caused by the open chute, Jerks you and gives that illusion.
2007-05-06 19:46:29 · answer #5 · answered by nyboriqua911 2 · 1⤊ 0⤋