Question

The absolute viscosity of a lubricant may be defined as the force required to cause a plate of unit area to slide with unit velocity relative to a parallel plate.

(a) True

(b) False

I have been asked this question in homework.

This key question is from Friction Between Lubricated Surfaces topic in section Friction of Machine Kinematics

Answer 1

Right answer is (a) True

To explain I would say: The absolute viscosity of a lubricant may be defined as the force required to cause a plate of unit area to slide with unit velocity relative to a parallel plate, when the two plates are separated by a layer of lubricant of unit thickness.