一长为L的匀质细杆,可绕通过中心O的固定水平转轴在铅直平面内自由转动（转动惯量为M(L2)/12),开始时杆水平静止,一质量与杆相同的昆虫以速度V垂直落到杆上L/4处,昆虫下落后立即向杆的端点爬去,若要使杆匀角速度转动,试求昆虫沿杆爬行的速

Mandy worked in a foreign accounting firm, take time every day staring at a computer screen,dunk heels, over time, often with foreign body and eye irritation. To the hospital for a check, just know th...