满分5 > 高中物理试题 >

将单摆A的摆长增加1.5m,振动周期增大到2倍,则A摆摆长为_______m,振...

将单摆A的摆长增加1.5m,振动周期增大到2倍,则A摆摆长为_______m,振动周期等于___________s.

 

0.5,1.4 【解析】 试题分析:单摆运动的周期公式 A摆周期 改变后 依题意, 解得,摆长   周期 故答案为0.5,1.4                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   考点:单摆周期公式的应用
复制答案
考点分析:
相关试题推荐

A、B二单摆,当A振动20次,B振动30次,已知A摆摆长比B摆长40cm,则A、B二摆摆长分别为________cm与________cm.

 

查看答案

将单摆摆球拉到悬点后由静止放开,到摆线伸直的时间为t1,将摆球拉开使摆线与竖直方向的夹角为3°,从静止放开摆球回到平衡位置的时间为t2,则t1∶t2=____________.

 

查看答案

如图所示,为一双线摆,二摆线长均为L,悬点在同一水平面上,使摆球A在垂直于纸面的方向上振动,当A球从平衡位置通过的同时,小球B在A球的正上方由静止放开,小球A、B刚好相碰,则小球B距小球A的平衡位置的最小距离等于____________

6ec8aac122bd4f6e

 

查看答案

一个单摆挂在电梯内,发现单摆的周期增大为原来的2倍,可见电梯在做加速度运动,加速度α为 [     ]

A.方向向上,大小为g/2

B.方向向上,大小为3g/4

C.方向向下,大小为g/4

D.方向向下,大小为3g/4

 

查看答案

一个摆钟从甲地拿到乙地,它的钟摆摆动加快了,则下列对此现象的分析及调准方法的叙述中正确的是 [     ]

A.g甲>g乙,将摆长适当增长

B.g甲>g乙,将摆长适当缩短

C.g甲<g乙,将摆长适当增长

D.g甲<g乙,将摆长适当缩短

 

查看答案
试题属性

Copyright @ 2008-2019 满分5 学习网 ManFen5.COM. All Rights Reserved.