RATIO HOW MANY TIMES
A= 10; B=20; C=10
If A turns one time, C will turn
A= 10; B=40; C55
If A turns one time, C will turn
A= 12; B=36; C=60
If C turns one time, A will turn
A= 84; B=12; C=36
If B turns one time, C will turn
A= 36; B=60; C=84
If A turns one time, C will turn

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?