The discussion revolves around the coefficient of restitution in the context of collisions, specifically addressing the relationship between the velocities of separation and approach. Participants explore theoretical implications, energy conservation, and the concept of superelastic collisions.
Participants express differing views on the implications of the coefficient of restitution and the conservation of mechanical energy, indicating that multiple competing views remain without a consensus.
The discussion includes assumptions about the nature of collisions and energy transformations, which are not fully resolved. The implications of a coefficient of restitution greater than one and the definition of superelastic collisions are also areas of ongoing exploration.
Those are two very different situations. For example, if the bodies stick together (a perfectly inelastic collision) the separation velocity will be zero.Parikshit M said:Is there no possibility that the velocity of separation is quite larger than that of approach? or vice versa?
It would imply that the velocity of separation is greater than that of approach .Doc Al said:Those are two very different situations. For example, if the bodies stick together (a perfectly inelastic collision) the separation velocity will be zero.
What do you think a coefficient of restitution greater than one would imply?
Well, yes. But what does that imply as far as energy goes?Parikshit M said:It would imply that the velocity of separation is greater than that of approach .
That's correct. A collision where the kinetic energy is greater after the collision than before would be an example of a superelastic collision--mechanical energy is not conserved. Some internal energy of the system must have been converted to mechanical kinetic energy. Not the typical collision between two objects.Parikshit M said:So does that mean mechanical energy is not conserved?