9-17. A cantilever beam is subjected to a quadratic distributed load, as shown in Fig. P9.17. Wo w(x) = = -10 (x² - P²) T Wo x Figure P9.17 Cantilever beam subjected to a quadratic distributed load. (a) Determine the total resultant force, R = 10° w(x) dx. (b) Determine the x-location of the resultant R; i.e., determine the cen- troid of the area under the dis- tributed load, x= 、w 0 xw(x) dx R