15. 如下圖所示,一桿AB,B端以水平繩索拉之,釘於垂直牆上C點,另懸掛一重物,則AB桿之壓力及BC繩索之拉力為 (A) = 46.2 N, = 92.3 N (B) = 34.6 N, = 85.4 N (C) = 27.3 N, = 78.2 N (D) = 18.4 N, = 64.2 N
15. 如下圖所示,一桿AB,B端以水平繩索拉之,釘於垂直牆上C點,另懸掛一重物..-阿摩線上測驗