For the beam shown below, the deflections under points A, B, and C are 2 mm, 4 mm, and āZā mm respectively for the applied load as shown.
For the same beam under the action of a unit load at C, the deflections under points A, B, and C are 0.5 mm, 1 mm and 0.5 mm respectively.
The value of Z (in mm upto 2 decimal places) is ______
Enter numerical value using the virtual keypad. Round off where necessary.