The Current San Francisco Cable Railway Is Driven by Two

Multiple Choice

The current San Francisco cable railway is driven by two large 16-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 = 16 ​

A) 38.7 feet
B) 35.7 feet
C) 40.7 feet
D) 37.7 feet
E) 33.7 feet