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 #3513

anonymous

anonymous
sketch #3513

sketch #4659 Ozzy Osbourne by Piter Olimpo

anonymous

anonymous
sketch #4659 Ozzy Osbourne by Piter Olimpo

sketch #3285 Spongebob by Abbie Hayman

anonymous

anonymous
sketch #3285 Spongebob by Abbie Hayman

sketch #3337 Uryuu Minene by Michael Angcay

anonymous

anonymous
sketch #3337 Uryuu Minene by Michael Angcay

sketch #4899

anonymous

anonymous
sketch #4899

sketch #5207 Gorilla by Jean-Benoit Renaud

anonymous

anonymous
sketch #5207 Gorilla by Jean-Benoit Renaud

sketch #3599 Lovely pencil face

anonymous

anonymous
sketch #3599 Lovely pencil face

sketch #1648

Laura Agapi Asnicar
sketch #1648

sketch #3420

anonymous

anonymous
sketch #3420

sketch #3727 Stitch by Louis Tradieu

anonymous

anonymous
sketch #3727 Stitch by Louis Tradieu

sketch #1287 No smoke

anonymous

anonymous
sketch #1287 No smoke

sketch #2628 Black haired women

sketchmaster
sketch #2628 Black haired women

sketch #3755 Panda by Roberto Castro Colimil

anonymous

anonymous
sketch #3755 Panda by Roberto Castro Colimil

sketch #5018 Owl by Komlós László

anonymous

anonymous
sketch #5018 Owl by Komlós László

sketch #3708

anonymous

anonymous
sketch #3708

sketch #1899 blue

anonymous

anonymous
sketch #1899 blue

sketch #4503 Naruto Biju Mode by Jessie Lightwood

anonymous

anonymous
sketch #4503 Naruto Biju Mode by Jessie Lightwood

sketch #113

Rachel Roe
sketch #113

sketch #1432

Laura Agapi Asnicar
sketch #1432

sketch #2479 C 'est qui ? Un rasta qui a manger trop de poulpe farcis. ? Un vieux chanteur de blue grass ? Najdica tomktoo ? A vous de me dire...

Pascal Quéru
sketch #2479 C 'est qui ? Un rasta qui a manger trop de poulpe farcis. ? Un vieux chanteur de blue grass ? Najdica tomktoo ? A vous de me dire...

sketch #1652

anonymous

anonymous
sketch #1652

sketch #5149 Daenerys Targaryen by Jorge Valero

anonymous

anonymous
sketch #5149 Daenerys Targaryen by Jorge Valero

sketch #4698

anonymous

anonymous
sketch #4698

sketch #855

Laura Agapi Asnicar
sketch #855

sketch #674

Rachel Roe
sketch #674

sketch #4287 eye

anonymous

anonymous
sketch #4287 eye

sketch #2753

Sofie Emilie Valentin Jeske
sketch #2753

sketch #3506 Goku by Saul Mansanares

anonymous

anonymous
sketch #3506 Goku by Saul Mansanares

sketch #4601 PSY Gentleman by Luis Daniel Sanchez Ramirez

anonymous

anonymous
sketch #4601 PSY Gentleman by Luis Daniel Sanchez Ramirez

sketch #5054 Angelina Jolie by Hailey So Pretty

anonymous

anonymous
sketch #5054 Angelina Jolie by Hailey So Pretty

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

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

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

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

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

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

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

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

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

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

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

题目工人用如图甲所示的�轮组利用箱子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 sketch template

工人师傅利用如图所示的两种方式将重均为300N的货物从图示位置�上缓慢提升一段距离．F1F2始终沿竖直方�图甲中OB=2OA图乙中动 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

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

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

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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

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

工人用图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随建材重变化的图象如图乙不计�轮和钢绳的重力及�擦g取10N/kg 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

如图所示四个�轮组如果�轮的重力和一切�擦及丙组的板重不计重物G的重力为600N．要将重物匀速提起四种情况下拉力F分别为F甲= F乙 sketch template

百度教育 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

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

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

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

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

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

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

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

一轮复习：阿特伍德机类型知乎 sketch template

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