• 2021-04-14
    图所示悬臂梁,当单独作用力F时,截面B的转角为θ,若先加力偶M,后加F,则在加F的过程中,力偶M 。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201705/0751af63a760476db1a5c27b259ab298.jpg