The surfaces where bones meet are lubricated by a fluid like substance, which makes the...

The surfaces where bones meet are lubricated by a fluid like substance, which makes the coefficient of friction between bones very small (see Table 3.2). What is the approximate lateral (i.e., horizontal) force required to make the bones in a typical knee joint slide across each other? For simplicity, assume the surfaces in the knee are flat and horizontal, and consider an adult of average mass.

(reference table 3.2)