If the fixed plate in Problem 2.24 is moved with a speed of 2 m/s in the opposite direcrion of the movement of the second plate, whar is the average shear stress in oil for this case? Problem 2.24 Two...

If the fixed plate in Problem 2.24 is moved with a speed of 2 m/s in the opposite direcrion of the movement of the second plate, whar is the average shear stress in oil for this case?

Problem 2.24

Two parallel places, one moving ar 4 m/s and rhe ocher fixed, are separared by a 5-mm-thick layer of oil wirh a specific gravicy of 0.8 and a kinemaric viscosicy of 1.25 X
  ls. Whar is the average shear srress in the oil?