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Reply	Tom says: Just to point out you are weightless throughout your fligh - not just at the top of your bounce.Try closing your eyes and report back!  (no votes) Tags: animals, human body.
	posted on 2008-11-21 10:57:00 | Report abuse

Reply	Anonymous says: You experience positive G-Force on the way up and negative G-Force on the way down but I don’t think this is what is causing this.Are your fillings amalgam and a bit old? They may no longer fit the cavity your dentist made for them as well as when they were new and so have some movement. This movement is noticeable at the top of your flight when differences in inertia will cause the fillings to rise to the top of the cavity and sink to the bottom of the cavity again on landing. A bit like the rolls of fat around my abdomen.  (no votes) Tags: animals, human body.
	posted on 2008-11-26 10:56:00 | Report abuse

Reply	ohno says: Sorry, anonymous, but you feel the same "G-Force" throughout your flight. Where should the change come from? Which "differences in inertia" are you talking about?  (no votes) Tags: animals, human body.
	posted on 2008-11-26 17:30:00 | Report abuse

Reply	Al X says: Tom, I agree with you, except closing his eyes may not work since you can still tell the direction you are travelling by how the air "moves" past you.  (no votes) Tags: animals, human body.
	posted on 2008-11-27 00:16:00 | Report abuse

Reply	Anonymous says: OK, strictly speaking astronauts in orbit around the Earth are not weightless and fighter pilots don’t experience any greater affect from gravity when making tight manoeuvres at high speed. Popularly, these experiences are understood as weightlessness and G-Force.Differences in inertia? Imagine the jumper held a sledge hammer by the top of the shaft furthest away from the head and with the head pointing down. Would the head of the hammer move relative to the jumper’s body during the flight? No, the rigidity of the shaft would ensure that the head of the hammer would reach its peak height at the same time as the jumper’s body.Replace the rigid shaft of the hammer with elastic. The head of the hammer would now reach its peak height at a different time to the holder’s body. Loose fillings would be able to move about in the cavity during the jump in the same way as the hammer head on elastic. These tiny pushes and pulls could be felt by the nerves in and around the root in the jaw.The fillings might not even have to be loose. Our teeth are not held rigidly in the jaw and they may be moving slightly in their sockets. The amalgam content of filled teeth would increase their inertia relative to an unfilled tooth making the affect more noticeable.  (no votes) Tags: human body.
	posted on 2008-11-27 11:08:00 | Report abuse

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