题目内容
有一单摆,在地球表面为秒摆,已知月球表面的重力加速度约为地球表面重力加速度的1/6.
(1)将该单摆置于月球表面,其周期多大?
(2)若将摆长缩短为原来的1/2,在月球表面时此摆的周期多大?
(3)该秒摆的摆长多少?(g="9.8" m/s2)
(1)将该单摆置于月球表面,其周期多大?
(2)若将摆长缩短为原来的1/2,在月球表面时此摆的周期多大?
(3)该秒摆的摆长多少?(g="9.8" m/s2)
(1)T月="4.9" s(2)T月="3.5" s(3)T地="0.99" m
(1)T月=2π
…①.T地=2π
…②
因秒摆的周期为2秒,则①式除以②式,T月=T地
="4.9" s.
(2)T月=T地
=
s="3.5" s
(3)l地=(
)2·g地=(
)2·9.8 m="0.99" m
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120601246340.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120601262358.gif)
因秒摆的周期为2秒,则①式除以②式,T月=T地
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120601277470.gif)
(2)T月=T地
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120601293647.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120601308361.gif)
(3)l地=(
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120601340405.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120601371264.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目