Refer to Fig XXXXXXXXXXThis problem illustrates the secret if the strength of cellotape joints: A disc of radius r is at a uniform distance h from a large flat plate, and the gap h is filled with a...

Refer to Fig. 8.25. This problem illustrates the secret if the strength of cellotape joints:

A disc of radius r is at a uniform distance h from a large flat plate, and the gap h is filled with a viscous liquid. The disc moves upwards at v = dh/dt, in the response to a central force F. Due to the symmetry of the problem (in the q direction), the governing equations are