P8-1. In each case, determine the internal loadings that act on the indicated section. Show the results on the left segment. 2 m 200 N 300 N (b) 100 N 0.4 m 0.4 m 200 N (c) 0.2 m 300 N 200 N 300 N 500 N 1 m (d) P8-1 2 m (a) 1 m 500 N 0.2 m 0.2 m 200 N