Weightlessness in Free Fall: What's Going On?

[Sentosahere]

Normally in a free fall , there will be gravity acting to your body but when we free fall , we don't really feel the force , we feel weightless ( ignoring air resistance ) , ( not in contact with anything). Why?

 

[robphy]

Deep answer: General Relativity says that a free-falling object travels on a geodesic trhough spacetime... no force is being applied.
Newtonian answer:
http://www.physicsclassroom.com/class/circles/Lesson-4/Weightlessness-in-Orbit

 

[PhanthomJay]

Normally in a free fall , there will be gravity acting to your body but when we free fall , we don't really feel the force , we feel weightless ( ignoring air resistance ) , ( not in contact with anything). Why?

in free fall, there are essentially no stresses or strains acting, so we don't feel anything even though the gravity force (weight force) is always acting. When standing on the ground, we feel the normal force ( contact force) causing internal stresses on the body. Remove that contact force and the stresses go away, and the body must now adjust to the lack of stress which make you 'feel' queasy like on a roller coaster drop . In that sense, we sort of do feel gravity, at least during the period of adjustment (which astronauts adjust to I am told, I am not one).