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问题如图1,通过滑轮用一轻绳拉湖面上的小船,使小船靠岸,设水平匀速拉绳的速度为v1,求:当轻绳与水平面夹角为θ时,小船的靠岸速度v2(错不解计滑轮摩擦)。由于同一段轻绳各点速度大小相等,所以拴着船的轻绳端点速度大小也是v1,把v1沿水平方向和竖直方向即为小船靠岸速度的大小v1
The problem is shown in Figure 1. Pull the boat on the lake with a light rope to the boat and set the speed of the horizontal uniform draw line to v1. Find the speed of the boat when the angle between the light rope and the horizontal plane is θ. V2 (incorrect calculation of pulley friction). Because the speed of the same section of the same point of the light rope is equal, so the speed of the end point of the light rope carrying the boat is also v1, and the v1 is along the horizontal and vertical direction is the size of the boat speed v1