a long chain is lying on the ground . it is coiled but not entangled. now if one end of the chain is connected to a moving object (say train) . the chain is going to acquire a velocity . when this happen does it involve any heat release...? what if a rope is in place of chain. my fren tells me that when the links collide with each other ina chain and end up acquiring heat energy as in inelastic collision.
i differ. whats ur opinion..?
2007-11-02 21:16:31 · 3 answers · asked by mikel 2 in Science & Mathematics ➔ Physics
Your friend is right though the heat released is negligible.
2007-11-02 22:53:15 · answer #1 · answered by Madhukar 7 · 0⤊ 0⤋
In the real world, the chain will acquire some heat, mainly from friction with the air and ground (it's going to bounce off all the sleepers),
If this occurred in space (a passing spaceship perhaps) it is theoretically possible the chain would whip around indefinitely, as the starting direction of each link will be determined by its orientation to the link in front. This assumes a totally elastic solid for the chain. No real material behaves this way so rope, chain, all will lose energy by friction and end up moving with the same speed and direction of the spaceship (but not necessarily in line or behind).
It's a case of "in theory, theory and practice are the same. In practice, they aren't"
2007-11-03 08:35:01 · answer #2 · answered by mis42n 4 · 0⤊ 0⤋
If the surfaces within the coil rub against each other, friction and thus heat are produced. It is more a case of friction than inelastic collision.
2007-11-03 04:21:37 · answer #3 · answered by Swamy 7 · 0⤊ 0⤋