![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d92cd8a2c77eeab668e82e632507b22b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d01f429f428cda953270b5663f5e245.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db70ed38991f62d8eca128ec3d1a7c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6dee2e996d6dfddcf552029041e948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f25c4b4621c576c865b230a2ec7c4e92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b333b4c00982d540e8487831bef793a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db70ed38991f62d8eca128ec3d1a7c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0839c17c93c98c1ed0b0acd0d66a7386.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c4b1bbca166a9e5fff7d5a549670f85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6573aa5324bfb51d7c25209a386ac1a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1f8a323c04ba0a23893e4501180df1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10924544c9d39b9b059abe0f563b322c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee8bd3a2fe0d1750aa48c4faac93396.png)
(1)求AB物块下滑速度最大时离
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
(2)求A对B作用力的最大值;
(3)调整斜面长度使AB物块速度最大时恰好到达斜面底端,此时撤去弹簧并解除AB间的锁定。A与挡板碰撞后物块B滑上木板C,木板C与平台碰撞后立即停止,物块B与物块1相碰后粘在一起,两物块继续运动,然后与物块2相碰,碰后三物块粘在一起继续运动……,所有碰撞时间极短。已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/224a64e120646f44807dd441f219e540.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
①物块B与物块1碰撞前瞬间的速度大小;
②物块B与前
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729d16d68f94b408e95496489dd75043.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb7ec37b33cdadbf9ad6872a363c0fd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36571f6123799bd5ec48b9da8972dec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/046088b2c52eab1e3ce47d662866cea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799edf593e3ba2b2372a83d9782be3a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6aa574462cb606f4185ba0a780a186c.png)
(1)求滑块a与滑块c碰后瞬间的速度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f44c235d8b49207ad3f2d77dc5d6cf20.png)
(2)通过计算判断滑块a与滑块c会不会发生二次相碰;
(3)求三个滑块最终停在x轴上的位置。
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fda5655ef480683a2d3b74f0b523439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b264a8e697336e02a666ed7741cd0f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a39549b799894533fd90c948f83bd70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3407e4fc3a16942e2d7caecc5490945.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c1f7060fdce7c2972042bbac9dc23b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264ef63c14f6ff5c1d8d71da71d85b05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3639b9b596019a23574b1dc4bf3e0ade.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158027114e734f6e41884fa5b92c6160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6967ec3aaf9e7e6a9d90533b8ff61d10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa1ee779c97fde225dcb99a49a667998.png)
(1)若滑块恰好经过圆形轨道最高点D,求滑块过C点对轨道的压力及滑块静止释放时的高度;
(2)若滑块从AB上高
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa8e14937114d64334cc32893cad18e0.png)
(3)若滑块从AB上高
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa8e14937114d64334cc32893cad18e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f58888df91890a19a1aa7511d19703f.png)
(1)小橡胶环A到达滑杆最低点Q时所受弹力大小;
(2)小橡胶环B在长直木杆C上上滑的最大距离;
(3)长直木杆C跟水平面第一次碰撞瞬间损失的机械能;
(4)小橡胶环B在长直木杆C上运动的总路程。
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56b2087eadbbd0dab72b7483b9181585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aeb9a94e392f6759b18abed89aacc5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e8f3b4c8b3466f13f12b5973c196173.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5847619822eb7498547dbf6d65cda50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15752847ab476edec45450680887baa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5656b37ffa2fbe763e1df00b68c3104.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276509f01529d982ab21e479a4619268.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)匀强电场的场强
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b628d87cb667a0a31766a88c6c426324.png)
(3)小球到达水平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/5/d37baa91-172c-4663-89cf-33e976a58553.png?resizew=160)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/5/e407ebce-40d3-46f9-9db9-cea519962cfd.png?resizew=204)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f58888df91890a19a1aa7511d19703f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276509f01529d982ab21e479a4619268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1100379a4385b9ce064847bc21760adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/368181e7d736849472605ab0e4de6c72.png)
A.经过足够长的时间,小滑块最终静止于![]() |
B.小滑块第一次返回圆弧轨道时上升的最大高度为![]() |
C.若![]() ![]() |
D.若![]() ![]() ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b41c93d54bc76586dd9b646b2b246c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a6a294d3d7206bcdde5b943dbe94f0.png)
(1)启动电机使圆筒加速转动,钢球与圆筒保持相对静止,第一次到达与圆心等高的位置B时,圆筒的角速度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0459597c217393d49437cd173fab0562.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f58888df91890a19a1aa7511d19703f.png)
(2)当钢球通过C点时,另一装置瞬间让钢球与圆筒分离(分离前后钢球速度不变),此后钢球仅在重力作用下落到位置D.CD连线过O点,与水平方向成45°。求分离时圆筒的角速度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b55b59c92a868cc6f448e5d92d257401.png)
(3)停止工作后将圆筒洗净,内壁视为光滑。将一钢球从位置C正下方的E点由静止释放,与筒壁碰撞6次后恰好又回到E点。若所有碰撞都是弹性的(即碰撞前后沿半径方向速度大小相等方向相反,沿切线方向速度不变),求钢球从释放开始至第一次回到E点所用的时间;若改变钢球释放的高度,钢球能否与筒壁碰撞3次后回到释放点,并简要说明理由(取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d4b2d536467ebce7f11358d732a1a30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709dca1c75f55b3640d3a98f52d244ee.png)
8 . 某兴趣小组设计的连锁机械游戏装置如图所示。左侧有一固定的四分之一圆弧轨道,其末端B水平,半径为3L;在轨道末端等高处有一质量为m的“”形小盒C(可视为质点),小盒C与大小可忽略、质量为3m的物块D通过光滑定滑轮用轻绳相连,左侧滑轮与小盒C之间的绳长为2L;物块D压在质量为m的木板E左端,木板E上表面光滑,下表面与水平桌面间动摩擦因数
(最大静摩擦力等于滑动摩擦力),木板E右端到桌子右边缘固定挡板(厚度不计)的距离为L;质量为m且粗细均匀的细杆F通过桌子右边缘的光滑定滑轮用轻绳与木板E相连,木板E与定滑轮间轻绳水平,细杆F下端到地面的距离也为L;质量为0.25m的圆环(可视为质点)套在细杆F上端,环与杆之间滑动摩擦力和最大静摩擦力相等,大小为0.5mg。开始时所有装置均静止,现将一质量为m的小球(可视为质点)从圆弧轨道顶端A处由静止释放,小球进入小盒C时刚好能被卡住(作用时间很短可不计),此时物块D对木板E的压力刚好为零。木板E与挡板相撞、细杆F与地面相撞均以原速率反弹,最终圆环刚好到达细杆的底部。不计空气阻力,重力加速度为g,求:
(2)小球在四分之一圆弧轨道上克服摩擦力所做的功;
(3)木板E与挡板碰后,向左返回的最大位移;
(4)细杆F的长度。
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e8d8e6a39eb510638617bdc683d160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09421cd9f3db0365b695e46a208ecfcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc5dd68d99ee6b2bed56d484fb4b48c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c88a4c874dc76208b1c3d15be90e81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fda5655ef480683a2d3b74f0b523439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b92ad873b02d0a95aed7d13bb8aa6b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a831fae871c9028a347e59294f7422ec.png)
(1)运动员到达B点时的速度大小;
(2)第一次到达D点时滑板对D点的压力;
(3)运动员有几次向上冲出E点的机会。
![](https://img.xkw.com/dksih/QBM/2021/12/15/2872968103985152/2873865521635328/STEM/1ceee306-3b96-4775-ac7c-c9d2845b83f5.png?resizew=561)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14eb529d7d45e4a4e6974a2e5194f819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55576c552077435453b32c52d1b237d.png)
![](https://img.xkw.com/dksih/QBM/2021/11/3/2843447788486656/2845298939682816/STEM/e96b5e56-5084-49ac-98b4-d8a33d64208a.png?resizew=239)
A.小球的重力和受到的风力大小之比为![]() |
B.小球落到![]() ![]() |
C.小球在上升和下降过程中机械能变化量之比为![]() |
D.小球从![]() ![]() ![]() |