工人利用如图所示的�轮组在20s内将200n的重物匀速拉到9m 高的楼上所用的拉力是80n．求1有用功是多�2�轮组的机械效率 Sketch Coloring Page

工人利用如图所示的�轮组在20s内将200n的重物匀速拉到9m 高的楼上所用的拉力是80n．求1有用功是多�2�轮组的机械效率 Template

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Take a peek at some of the sketches created by our users, are you a sketchite?

sketch #5055

anonymous

anonymous
sketch #5055

sketch #3626 Skream by Wellen Lima

anonymous

anonymous
sketch #3626 Skream by Wellen Lima

sketch #2579

Laura Agapi Asnicar
sketch #2579

sketch #4601 PSY Gentleman by Luis Daniel Sanchez Ramirez

anonymous

anonymous
sketch #4601 PSY Gentleman by Luis Daniel Sanchez Ramirez

sketch #5053

anonymous

anonymous
sketch #5053

sketch #5155

anonymous

anonymous
sketch #5155

sketch #5222 Magic Art Tin Sheek

anonymous

anonymous
sketch #5222 Magic Art Tin Sheek

sketch #2771 Naruto by Милен Тревата

Милен Тревата
sketch #2771 Naruto by Милен Тревата

sketch #4454 Lisa by Muhammad Raiyaan

anonymous

anonymous
sketch #4454 Lisa by Muhammad Raiyaan

sketch #3204 eminem

anonymous

anonymous
sketch #3204 eminem

sketch #302

Chrystal Smith
sketch #302

sketch #4475 Daft Punk by Reggie Garcia

anonymous

anonymous
sketch #4475 Daft Punk by Reggie Garcia

sketch #3656 Igor by Vincent Baudement

anonymous

anonymous
sketch #3656 Igor by Vincent Baudement

sketch #5277 League of Legends champions by Sylvie Rieux

anonymous

anonymous
sketch #5277 League of Legends champions by Sylvie Rieux

sketch #2055 Flower

Raisa Mahmud
sketch #2055 Flower

sketch #5100 Shadow by An Nguyen

anonymous

anonymous
sketch #5100 Shadow by An Nguyen

sketch #779 Gol D Roger

Benjo Arellano
sketch #779 Gol D Roger

sketch #1454 donara

Donara Smbatyan
sketch #1454 donara

sketch #3447 Hidan (Akatsuki) by ßeyza Karaca

anonymous

anonymous
sketch #3447 Hidan (Akatsuki) by ßeyza Karaca

sketch #3532 Angel by Geneval Mendes

anonymous

anonymous
sketch #3532 Angel by Geneval Mendes

sketch #4868 Pokemons! by Ammed Hjb

anonymous

anonymous
sketch #4868 Pokemons! by Ammed Hjb

sketch #1700

Laura Agapi Asnicar
sketch #1700

sketch #4493 Jimi Hendrix by Alex Stoun

anonymous

anonymous
sketch #4493 Jimi Hendrix by Alex Stoun

sketch #2646 Buzzy bee on flowers

Rachel Roe
sketch #2646 Buzzy bee on flowers

sketch #5002 Jimi Hendrix by Piter Olimpo

anonymous

anonymous
sketch #5002 Jimi Hendrix by Piter Olimpo

sketch #4429 Spongebob by Brenda Peña

anonymous

anonymous
sketch #4429 Spongebob by Brenda Peña

sketch #1964 愛鼠繪

愛君
sketch #1964 愛鼠繪

sketch #4700

anonymous

anonymous
sketch #4700

sketch #3736 Why so serious? by Taï Marsan

anonymous

anonymous
sketch #3736 Why so serious? by Taï Marsan

sketch #1470

Laura Agapi Asnicar
sketch #1470

tomski工人利用如图所示的�轮组在20s内将200n的重物匀速拉到9m 高的楼上所用的拉力是80n．求1有用功是多�2�轮组的机械效率 coloring

工人利用如图所示�轮组提升重物不计绳重和�擦．若工人用250N的力恰好能将重物400N的物体竖直�上匀速提起2m根据以上已知信息计算至�5 sketch template

工人师傅利用如图所示的�轮组将重为800N的货物匀速提升 08m所用拉力F为320N则工人做的有用功是640640J此�轮组的机械效率 sketch template

工人利用如图所示的�轮组将重900N的物体竖直�上匀速提升05m工人所用的拉力F为600N求1人的拉力做的功为多�J2此 sketch template

利用如图所示的装置工人用力F把重为100N的物体以02m/s的速度匀速提升6m．若不计绳重和�擦则这一过程中 A拉力F的大小为 sketch template

工人用300N的力利用如图所示的�轮组将重540N的物体竖直�上匀速提升了1m则该�轮组此时的机械效率η= 不计�擦动�轮的重力G sketch template

如图甲为工人师傅用�轮组提升重物的装置示意图，已知动�轮和水桶总重20N，将重为160N的水以02m/s的速度匀速提起，所用时间为20s，此 sketch template

工人利用如图所示的�轮组提升重物不计绳重和�擦．1若工人用250N的力恰好能将重400N的物体竖直�上匀速提升求该�组此时的机械效率 sketch template

小强利用如图所示的�轮组去拉物体使重为2000N的物体A沿水平方�匀速移动了6m若A所受地面的�擦力f=600N小强所用拉力F=250N sketch template

31．如图所示工人师傅用一个�轮组在5s内将重450N的木箱从地面匀速吊上1m高所用的拉力为200N不计绳重和�擦．g取10N/㎏．求 sketch template

工人利用如图所示的�轮组将重900N的物体竖直�上匀速提升 05m工人对绳的拉力为600N则�轮组对重物所做的有用功W有用 sketch template

如图6所示工人用�轮组提升重物已知�轮质量相同若把同一货物匀速提升相同的高度不计绳子与�轮间的�擦 A．使用定�轮比动�轮省力但 sketch template

2．如图所示在不计绳重和�擦的情况下用动�轮把重40N的物体匀速提高2m所用的拉力为25N则拉力做功是 J动�轮的机械效率是 果把 sketch template

小明利用如图所示的�轮组将重为900N的物体从一楼匀速提升到六楼所用的拉力为360N绳子自由端移动的速度为03m/s．求1小明所用 sketch template

如图所示，工人站在水平台面上用�轮组提货物。工人第一次竖直�上用200N的力拉绳子时，货物未离开水平台面；第二次竖直�上拉动绳子，使货物以0 sketch template

如图所示工人利用�轮组用300N的力将重480N的木箱�上匀速提升了1m用时10s则工人做功的功率是6060W该�轮组的机械效率η sketch template

某工人用如图所示的装置把重160N的物体提高1m所用的拉力为100N若不计绳重动�轮重为30牛．则该工人所做的有用功为160160 J sketch template

工人用如图所示�轮组将矿井中的物体A 和物体B 先后匀速提升上来动�轮重50N 物体A 所受重力之比为2 1 提升物体A 时 sketch template

工人利用如图所示的�轮组将重900N的物体竖直�上匀速提升05m工人对绳的拉力为600N求 1�轮组对重物所做的有用功 2该 sketch template

如图所示�路工人用撬棒撬石头O为撬棒的支点请画出作用在撬棒上动力F的力臂．题目和参考答案——青夏教育精英家教�—— sketch template

如图所示的是工人用铁棒撬石头的示意图请在图中画出动力臂L1阻力F2阻力臂L2——青夏教育精英家教�—— sketch template

63．工人用如图所示的�轮组提升重物在10s内将240N的物体匀速提升2m已知工人的拉力为100N不计绳重与�擦阻力求 1工人 sketch template

用如图所示甲乙两个�轮组分别提起相同的质量的物体．两个�轮组的动�轮的质量相同不计�擦则A．F甲> F乙η甲>η乙B．F甲 sketch template

工人师傅用如图所示的�轮组提升重物在大小为500N的拉力F作用下10s内将 800N的重物匀速提升了2m此过程中 A．有用功是1000J sketch template

工人用如图甲所示的�轮组运送建材上楼每次运送量不定．�轮组的机械效率随建材重量变化的图象如图乙所示�轮和钢绳的�擦力及绳重忽略不计g 取 sketch template

30．如图所示用�轮组提起重G的物体绳子自由端拉力为F重物以速度勘匀速上升不计�擦和绳重则 1�轮组的机械效率为 2 sketch template

如图所示建�工人用�轮组提升重为220N的泥桶动�轮重为20N不计�轮与轴之间的�擦及绳重若工人在5s内将绳子匀速�上拉6m则泥桶 sketch template

工人利用如图所示的�轮组将重900N的物体竖直�上匀速提升05m工人对绳的拉力为600N求 1�轮组对重物所做的有用功 2该 sketch template

如图所示是建�工人利用�轮组从竖直深井中提取泥土的情形．某次操作中工人用400N的拉力F在1min内将总重为900N的泥土匀速提升5m．在 sketch template

工人师傅利用如图所示的�轮组将重为800N的货物匀速提升 08m所用拉力F为320N则工人做的有用功是640640J此�轮组的机械效率 sketch template

1如图所示物体A静止在水平地面在图中画出它所受的力的示意图．2用如图所示的�轮组提升重物若拉力F将绳子的自由端移动1m时重物 sketch template

工人利用如图所示的�轮组在20s内将200N的重物匀速拉到9m 高的楼上所用的拉力是80N．求1有用功是多�2�轮组的机械效率 sketch template

题目往车上装重物时常常用长木板搭个斜面把重物沿斜面推上去如图所示工人用3m长的斜面把120kg的重物提高1m假设斜面很光�则 sketch template

工人用如图所示的�轮组提升重物在10s内将240N的物体匀速提升2m已知工人的拉力为100N不计绳重与�擦阻力求1工人做功的功率 sketch template

工人利用如图所示�轮组提升重物不计绳重和�擦．若工人用250N的力恰好能将重物400N的物体竖直�上匀速提起2m根据以上已知信息计算至�5 sketch template

百度教育 sketch template

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