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Two different Newtonian fluids (A & B) are placed between identical sets of parallel plates as shown below. Each pair of plates is separated by the same distance L. Both bottom plates are pulled to the right at a constant velocity V and both top plates are held stationary. The force required to pull the bottom plate in contact with fluid A (FA) is twice the force required to pull the bottom plate in contact with fluid B (FB). The only motion occurring in each fluid is caused by the movement of the bottom plate. Based on this observation and ignoring edge effects, how are viscosities of the two fluids (μÅ and μB)related?

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