Introduction to Classical Mechanics · Problem 11.46
Relativity (Kinematics) — Morin
Physics — Mechanics · short-train-in-a-tunnel
Problem
Consider the scenario in Problem 11.6, with the only change being that the train now has length rL, where r is some numerical factor. What is the largest value of r, in terms of v, for which it is possible for the bomb not to explode? Verify that you obtain the same answer working in the train frame and working in the tunnel frame.