loosehead ,,fo3nix and scotstone.....

[dudenexdoor1]

i think the velocity with which everylink hits ground is 7.07 metres per second .. . when calculating with zero air resistance and no friction at all.....(theoritically..althou it mightnot be possible experimentally... and if there is friction then velocity will b less than 7.07 dependin on the friction co.eff) but when put down all of chain at once(instead of lettin it flow over the edge) the links will hit the ground at 10 metres per sec.( bcos height is 5 metres and acc due to gravity is taken as 10mpersec per sec.. using s = ut + 1\2 at*t) ..... so theres a diff in total kinetic energy obtain .. theoritically only half k.e is got

[jake-the-peg]

Why are you assuming that the links accelerate at 10m/s/s ?

This is the acceleration due to gravity of a body in freefall.

Your chain links are not in freefall - each link falling is pulling the links behind it off of their support. They are expending energy accelerating the links from rest to whatever speed the chain falls at.

[ugly_bob]

Yeah, the chain is not in freefall, so you cannot use the acceleration due to gravity that way (except maybe for the last link).

You probably need to look at some equations from fluid dynamics to properly calculate the motion of the chain and hence the speed etc.

[Loosehead]

you don't have to start new threads, let's keep it all together.

I think what jake and I have both failed so far to communicate is that this is Not LCE experiment, the conditions do dot describe a measurable scenario, It is however a credible ADTG experiment. As the chain is flowing there are links being pulled down by gravity as well as other links resisting being pulled down by gravity, at a rough calculation the 5 metres of chain would not be heavy enough to pull the other 80 metres over the edge anyway. On every level this is a flawed thought experiment.

[brachiopod]

Arhh, sorry... I get it now - I thought you meant 'links' as in 'posts' here on AB, - in which case, my 'links' (especially at this time of night), usually hit the ground with a severe terminal velocity in excess of 44.704 m/s.