Question: Consider an explorer at radius R1 from a non-rotating black hole of mass M. The explorer has a reel of strong unstretchable rope of linear

Consider an explorer at radius R1 from a non-rotating black hole of mass M. The explorer has a reel of strong unstretchable rope of linear density (mass per length) . The observer unwinds the rope and lets its tip to hang downwards, reaching radius R2 < R1. What is the length of the rope the observer had to release? How hard does the explorer have to hold the rope? What happens when R2 2M?

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