有些物理问题的背景并不复杂,但由于数学知识有欠缺,列出方程后却求解无术,委实遗憾.下面两道题的解法就很独特,请看: 例1 如图1所示,在光滑的圆锥顶端用长为l的细绳悬挂一质量为m的小球,圆锥的顶角为2θ.当小球以角速度ω在圆锥面上匀速旋转时(球紧压锥面),绳的张力为多少? The background of some physics problems is not complicated. However, due to the lack of mathematical knowledge, after the equations are listed, they have no way to solve the problem. This is actually a matter of regret. The solution to the following two questions is very unique. Please see: Example 1 As shown in Figure 1, The top of the smooth cone is suspended from a ball of mass m by a string of length l. The apex angle of the cone is 2θ. When the ball rotates at a constant rate of ω on the conical surface (ball pressing cone), the rope What is the tension?