The Current San Francisco Cable Railway Is Driven by Two

question 82

Short Answer

The current San Francisco cable railway is driven by two large 12-foot-diameter drive wheels, called sheaves. Because of the figure-eight system used, the cable subtends a central angle of 270° on each sheave. Find the length of cable riding on one of the drive sheaves at any given time. ​ a = 12 ft If the answer needs rounding round it to three significant digits. __________ feet

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