题型:问答题 如图所示,一长度为R的轻质细绳与质量为m的小球相连,悬挂于O点.现将小球从水平位置P点自由释放.求:(1)当细绳摆到竖直位置时小球的速度大小;(2)当细绳摆到竖直位置时此时小球所受拉力的大小. 查看答案
题型:单项选择题 ()is the vertical distance measured on the vessel’s side amidships from the load water line to the upper side of the freeboard deck or a point corresponding to it.A.BuoyancyB.FreeboardC.DraftD.Displacement 查看答案