The Current San Francisco Cable Railway Is Driven by Two

question 122

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

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