General Relativity: An Introduction for Physicists · Problem 11.11
Schwarzschild black holes — Hobson, Efstathiou & Lasenby
Physics · tidal-tension-wire-black-hole
Problem
Two compact masses, each of mass m, are connected by a light strong wire of length l. The system is aligned in such a way that the two masses lie along a radial line from a Schwarzschild black hole, and it is released from rest at coordinate radius r. Obtain an expression for the tension in the wire immediately after the system is released.