I completely agree with you. Fang Bo misleads, saying it's not possible to brush first and then hit, yet somehow possible to hit first and then brush. Like you mentioned, it requires closing the blade angle to hit first and then brush. However, the ball stays on the paddle for such a short time, it's not possible to time this change. Even if the paddle angle is continuously closing, that change happens so slowly relative to the duration of contact, that to the ball, the angle is effectively not changing. I believe the truth is this. The ball is so small, just hitting it off-center won't generate enough spin. Therefore, the entire arm must focus on brushing. It's the timing of contact, the rotation of the body, and the forward transfer of the body center that provides the hitting component.
說的太棒了。
更正，明白了。
撞击和摩擦的用力角度不一样。就是力沿着击球点和球心之间的直线A是纯撞击，有一点偏差就是有摩擦，当力的方向和A线成直角就是纯摩擦。所以是当击球撞击后摩擦，拍子的角度一定是变化的。 然后我问很多省队和国家队的， 版型是不是应该变化。又没人说得清楚。 现在的顶级运动员都是靠瞎蒙。 手感， 缺乏理论知识。
I completely agree with you. Fang Bo misleads, saying it's not possible to brush first and then hit, yet somehow possible to hit first and then brush.
Like you mentioned, it requires closing the blade angle to hit first and then brush. However, the ball stays on the paddle for such a short time, it's not possible to time this change. Even if the paddle angle is continuously closing, that change happens so slowly relative to the duration of contact, that to the ball, the angle is effectively not changing.
I believe the truth is this. The ball is so small, just hitting it off-center won't generate enough spin. Therefore, the entire arm must focus on brushing. It's the timing of contact, the rotation of the body, and the forward transfer of the body center that provides the hitting component.
你这明显是书读多了的症状。看一下医生吧。
老师讲得对。但两句话的事，给讲得呀
你们国家队真应该找个数学物理老师 教一下几何和受力方向
用感觉，说感觉，不需要那么精准的描述，高水平都能理解，交流效率高，完全没有影响结果
目前没有一个物理老师能教好乒乓球。所以应该是物理老师虚心的找个乒乓球教练学一下怎样打好乒乓球。
撞击和摩擦的比例你们其实全靠经验， 还没到达提炼出理论的地步。最好引进数学物理知识，或者AI数据分析。