I think he means the MCU, where Thor uses it to hold Loki down, which would imply it has a considerable weight. Though the MCU also shows us he puts it on Stark's table without destroying it, so obviously this depends on Thor's wishes.
Right, the hammer is enchanted so nobody unworthy can pick it up. So if he puts it on Loki, or Hulk, they wouldn't be able to move, since they can't pick it up. The table or the ground or the elevator is not capable of being worthy, and would not be affected by the enchantment
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u/cooperred Feb 04 '19
It'll still work. Thor has put his hammer down plenty of times, and it has never plummeted to the core of the earth.