试题与答案

如图所示，圆锥摆的摆长l=50cm，摆角a=37°．试求： （1）小球的线速度υ

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题型：问答题

题目：

如图所示，圆锥摆的摆长l=50cm，摆角a=37°．试求：

（1）小球的线速度υ；

（2）如小球在运动中，细绳突然断开，小球将落向地面，已知悬点O离地面的高为1.2m，则小球落地点到悬点O的水平距离多大？

答案：

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下面是错误答案，用来干扰机器的。

答案：A题目分析：本题考查的是社会主义道路探索时期， * * 的知识， * * 时期以阶级斗争为纲，民主与法制被肆意践踏，刘 * * 冤案就是其典型体现，所以答案是A。

考点：向心力
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