Creative Speculation
In reply to the discussion: North Tower Acceleration [View all]jesters
(108 posts)for those confused.
William Segar says, "Then, in his 'energy summary,' Ross lists 'Pulverisation of concrete on impacting floor 304 MJ' and 'Pulverisation of concrete on impacted floor 304 MJ.'..."
Here's what Ross wrote:
http://gordonssite.tripod.com/id1.html
"....Energy required:
Momentum losses 1389MJ
Plastic strain energy in lower impacted storey 244MJ
Plastic strain energy in upper impacted storey 215MJ
Elastic strain energy in lower storeys 64MJ
Elastic strain energy in upper storeys 126MJ
Pulverisation of concrete on impacting floor 304MJ
Pulverisation of concrete on impacted floor 304MJ
Total Energy required 2646MJ
Minimum Energy Deficit -390MJ ...."
Do you know why those items are listed twice?
Because he's accounting for Newton's third law.