A hydraulic cylinder is 100mm diameter and is fed by a pipe 15mm in diameter. If the piston in the cylinder moves forward at a rate of 0.2ms^1, calculate the velocity of the oil in the pipe line.
Diameter of the cylinder, D= 100 mm
diameter of the pipe, d = 15 mm
Piston velocity, V= ...
Corresponding to a piston velocity in a hydraulic cylinder, oil velocity in the attached pipe is obtained.