试题与答案

①如图所示,一竖直的半圆形光滑轨道与一光滑曲面在最低点平滑连接,一小球从曲面上距

题型:实验题

题目:

①如图所示,一竖直的半圆形光滑轨道与一光滑曲面在最低点平滑连接,一小球从曲面上距水平面高处由静止释放,恰好通过半圆最高点,则半圆的半径=                

②用游标卡尺测量小球的直径,如图所示的读数是     mm。

答案:

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