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高三一轮复习|系统机械能守恒定律

  • 2026-10-09 07:30:37
高三一轮复习|系统机械能守恒定律

高三一轮复习｜系统机械能守恒定律

高三一轮复习每日一练｜第 54 天
今日练习：系统机械能守恒定律
系统机械能守恒是机械能板块的重难点，不再局限单个物体，要学会把多个物体看作整体分析，很多同学容易忽略系统内部弹力做功带来的能量变化。
本次练习包含四大题型：
▪️题型一：非质点类物体的机械能守恒
▪️题型二：杆连接系统的机械能守恒
▪️题型三：绳连接系统的机械能守恒
▪️题型四：弹簧连接系统的机械能守恒
处理系统机械能守恒问题的关键是准确判断系统机械能是否守恒，分清内力做功情况，注意杆、绳、弹簧连接体中各物体速度之间的关联关系。#高中物理#一轮复习#每日一练#高考提分#自主学习#必修二#机械能#机械能守恒定律#系统机械能问题



选题整理不易，未经允许请勿截图、转发到其他自媒体平台，感谢尊重劳动付出！

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  1. CONNECT:[ UseTime:0.000666s ] mysql:host=172.18.0.4;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000745s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000357s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000389s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000519s ]
  6. SELECT * FROM `set` [ RunTime:0.000281s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000695s ]
  8. SELECT * FROM `article` WHERE `id` = 521006 LIMIT 1 [ RunTime:0.000316s ]
  9. UPDATE `article` SET `lasttime` = 1791503639 WHERE `id` = 521006 [ RunTime:0.004363s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000309s ]
  11. SELECT * FROM `article` WHERE `id` < 521006 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000415s ]
  12. SELECT * FROM `article` WHERE `id` > 521006 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000407s ]
  13. SELECT * FROM `article` WHERE `id` < 521006 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000570s ]
  14. SELECT * FROM `article` WHERE `id` < 521006 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000827s ]
  15. SELECT * FROM `article` WHERE `id` < 521006 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000677s ]
0.089050s