I recently had a customer contact me about a tension control issue on his machine, a web processing machine wiith loadcell based tension control. He said the machine ran fine except for a small speed range during accel and decel. I had seen this before and told him the machine was passing...
I am having trouble reconciling conservation of momentum and conservation of energy. If two bodies of equal mass, one stationary and one moving, collide and both bodies exhibit perfect elastic deformation at the contact point (infering no loss of energy due to plastic deformation of damping)...