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开普勒第二定律与简谐运动结合的习题

当前时间： 2026-08-10 15:49:15 分类：办公文件 评论(0)
开普勒第二定律与简谐运动结合的习题

分享一个开普勒第二定律与简谐运动结合的习题，暑假了不想打字了

题目描述

假设地球为质地均匀的球体，在地球表面上方高为处静止释放一个小物体，此物体自由下落，当达到地球表面时，正好落入过地球中心的光滑细隧道，物体从隧道零一出口出来继续向前运动达到最高点，然后按原路返回，之后就一直以这样的方式来回运动，求物体运动的周期。

解析

基本 文件 流程 错误 SQL 调试
  1. 请求信息 : 2026-08-10 18:14:49 HTTP/1.1 GET : https://www.yeyulingfeng.com/a/920069.html
  2. 运行时间 : 0.245346s [ 吞吐率：4.08req/s ] 内存消耗：4,754.14kb 文件加载：145
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=2e1ff0be4bbb04660dcfee4cc9b1a450
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  145. /yingpanguazai/ssd/ssd1/www/wwww.yeyulingfeng.com/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.001007s ] mysql:host=127.0.0.1;port=3306;dbname=wenku;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001346s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.004979s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.001509s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001451s ]
  6. SELECT * FROM `set` [ RunTime:0.000812s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001421s ]
  8. SELECT * FROM `article` WHERE `id` = 920069 LIMIT 1 [ RunTime:0.004604s ]
  9. UPDATE `article` SET `lasttime` = 1786356890 WHERE `id` = 920069 [ RunTime:0.014505s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000770s ]
  11. SELECT * FROM `article` WHERE `id` < 920069 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001136s ]
  12. SELECT * FROM `article` WHERE `id` > 920069 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002280s ]
  13. SELECT * FROM `article` WHERE `id` < 920069 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.008092s ]
  14. SELECT * FROM `article` WHERE `id` < 920069 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.005204s ]
  15. SELECT * FROM `article` WHERE `id` < 920069 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.004351s ]
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