A Bucket in an Old Well Is Hoisted Upward by a Rope

Multiple Choice

A bucket in an old well is hoisted upward by a rope which winds up on a cylinder having a radius of 0.050 m.How many rev/s must the cylinder turn if the bucket is raised at a speed of 0.250 m/s?

A) 5.00 rev/s
B) 7.85 rev/s
C) 1.59 rev/s
D) 0.80 rev/s
E) 3.18 rev/s