Let me recommend you a youtube channel: "But Why?" They will be able to answer this question better than I ever will, but their video essentially says that objects are not as we see them, they are billions of molecules bonded in a manner that is the object in our hand. However, fundamentally, everything is just that, molecules. So when the string would cross the event horizon, the entire string would not be sucked in, but all that has crossed the event horizon would undoubtedly be gone forever. The molecules that composed that part of the string have lose their bond to the object, and are now destined to fall into the singularity.
I do recommend the channel, though. He has a video where he asks this very question, although I don't remember which one it is.
_Restitutor_Orbis_ t1_j27ywge wrote
Reply to What if an object crosses an event horizon of a black hole... by Cthaeh420
Let me recommend you a youtube channel: "But Why?" They will be able to answer this question better than I ever will, but their video essentially says that objects are not as we see them, they are billions of molecules bonded in a manner that is the object in our hand. However, fundamentally, everything is just that, molecules. So when the string would cross the event horizon, the entire string would not be sucked in, but all that has crossed the event horizon would undoubtedly be gone forever. The molecules that composed that part of the string have lose their bond to the object, and are now destined to fall into the singularity.
I do recommend the channel, though. He has a video where he asks this very question, although I don't remember which one it is.