Uploaded April 2025 | Updated September 2026, 2 weeks ago

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You can find more information about this subject in this paper:
researchgate.net/profile/Radi-Khrapko/publication/256177460_Energy_extraction_during_uniform_lowering_of_a_body_into_a_black_hole/links/553a302e0cf2c415bb06f20a/Energy-extraction-during-uniform-lowering-of-a-body-into-a-black-hole.pdf