用如图所示�轮组提升重物．人用50n的拉力f15s内使重为90n的物体匀速上升了3m．不计绳重和�擦求1动�轮的重．2人拉绳子 Sketch Coloring Page

用如图所示�轮组提升重物．人用50n的拉力f15s内使重为90n的物体匀速上升了3m．不计绳重和�擦求1动�轮的重．2人拉绳子 Template

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sketch #4383 4383

anonymous

anonymous
sketch #4383 4383

sketch #3489 Panda by Scott Terry

anonymous

anonymous
sketch #3489 Panda by Scott Terry

sketch #3300

anonymous

anonymous
sketch #3300

sketch #3974 Bird Skerch w/ vibration

anonymous

anonymous
sketch #3974 Bird Skerch w/ vibration

sketch #3804

Laura Agapi Asnicar
sketch #3804

sketch #3484 Red Hot Chili Peppers by Nik Zulqarnain

anonymous

anonymous
sketch #3484 Red Hot Chili Peppers by Nik Zulqarnain

sketch #3774 Marilyn Manson by Junior Silva

anonymous

anonymous
sketch #3774 Marilyn Manson by Junior Silva

sketch #2856 Merry Christmas from Melany Campano Laos Komlós László

anonymous

anonymous
sketch #2856 Merry Christmas from Melany Campano Laos Komlós László

sketch #808

Laura Agapi Asnicar
sketch #808

sketch #3076 Angel by Burak Turan

anonymous

anonymous
sketch #3076 Angel by Burak Turan

sketch #3699 Dragon by Ana Cecilia

anonymous

anonymous
sketch #3699 Dragon by Ana Cecilia

sketch #3258

anonymous

anonymous
sketch #3258

sketch #2781

Smile Better
sketch #2781

sketch #68512

anonymous

anonymous
sketch #68512

sketch #5434

anonymous

anonymous
sketch #5434

sketch #1116

Joselynn Ann Gossette
sketch #1116

sketch #2560

anonymous

anonymous
sketch #2560

sketch #5018 Owl by Komlós László

anonymous

anonymous
sketch #5018 Owl by Komlós László

sketch #5209

anonymous

anonymous
sketch #5209

sketch #2664

Jorge Valero
sketch #2664

sketch #3734

Goran Djordjevic
sketch #3734

sketch #2618

sketchmaster
sketch #2618

sketch #5054 Angelina Jolie by Hailey So Pretty

anonymous

anonymous
sketch #5054 Angelina Jolie by Hailey So Pretty

sketch #1387

Laura Agapi Asnicar
sketch #1387

sketch #25 Suzzy the stegosaurus

Rachel Roe
sketch #25 Suzzy the stegosaurus

sketch #5039

anonymous

anonymous
sketch #5039

sketch #5314

anonymous

anonymous
sketch #5314

sketch #3683 Hellboy by Loai Issa

anonymous

anonymous
sketch #3683 Hellboy by Loai Issa

sketch #5313 Katy Perry by Monalisa Theresia

anonymous

anonymous
sketch #5313 Katy Perry by Monalisa Theresia

sketch #5061

anonymous

anonymous
sketch #5061

tomski用如图所示�轮组提升重物．人用50n的拉力f15s内使重为90n的物体匀速上升了3m．不计绳重和�擦求1动�轮的重．2人拉绳子 coloring

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甲所示轮轴实质是一种杠杆．小捷同学为了探究轮轴的平衡条件进行了如下实验实验一如图乙所示重物G通过细绳绕在轴上在轮的边缘沿切线 sketch template

用四个�轮和两根相同的绳子组成如图所示的甲、乙两个�轮组用它们匀速提起货物在绳自由端施加竖直的拉力分别为F甲和F乙物重分别为G甲和G乙 sketch template

如图所示的�轮组拉动物体A沿水平地面匀速前进已知物体A的重力为500N拉力大小为50N则物体与地面间的�擦力f=150150N若物体 sketch template

用如图20所示的�轮组提升重物G已知每个动�轮重150N绳子所能承受的最大拉力为400N绳重和�擦均不计求 1若重物G为500N sketch template

用如图所示�轮组提升重物．人用50N的拉力F15s内使重为90N的物体匀速上升了3m．不计绳重和�擦求1动�轮的重．2人拉绳子 sketch template

如图所示用�轮组提升重物时重200N的物体在5s内匀速上升了1m．已知拉绳子的力F为120N如果不计绳重及�擦则提升重物的过程中A sketch template

如图所示分别用两个�轮组在相同的时间内将重相同的物体G匀速提升相同的高度每个�轮的重均相同．不计绳重及�擦此过程中 A．甲的机械 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

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

用如图所示的�轮组提升重为G=3200N的重物当重物以05m/s的速度匀速上升时拉力F的功率是2000W．忽略�擦和绳重．求1动�轮 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

用如图所示�轮组提起重物不计动�轮自重和�擦若拉力F为50N则物重G为 N若绳子的自由端�上拉06m则重物升高 M．题目和参考 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

用如图所示的�轮组匀速提升浸没在水中的物体，已知G=3900N。圆柱形容器底面积S=06m²，物体浸没在水中时水面高度为100cm，当物体 sketch template

如图所示是由三个相同的�轮组装成提升重物的装置固定点O所能承受的最大拉力为2300N．在不计绳重和轴的�擦情况下假设绳子足够结实提起 sketch template

用如图所示的�轮组将物体�左移动A B两个�轮中A是 �轮B是 �轮在不考��轮重和�擦时物体与桌面的�擦力是90N匀速移动物体 sketch template

用图甲所示的�轮组运送货物上楼每件货物重100N每次运送的量不定乙图绘出了整个过程中�轮组的机械效率随货物重力增加而变化的图象解答下列 sketch template

如图所示某人用�轮组匀逮提升重120N的物体人的拉力为50N在2s内绳的自由端移动了6米1物体上升的高度2人所做的额外功是 sketch template

某人用如图所示的�轮组匀速提升500N的重物所用的拉力F为300N 绳子自由端被拉下2m在此过程中求�拉力F所做的功 ��轮组的 sketch template

百度教育 sketch template

如图所示用�轮组提升重物在图中画出�轮组提升重物最省力的绕法．题目和参考答案——青夏教育精英家教�—— sketch template

用如图所示的�轮组提升重物人用500N的拉力F在20s内使重为800N的物体匀速上升了3m．不计绳重和�擦则人拉绳子做功的功率和�轮组的 sketch template

10．用相同的定�轮和动�轮组成甲乙两个�轮组如图8所示用它们来提升同一重物甲�轮组将重物举高1m乙�轮组将重物举高2m在不计绳 sketch template

59．如图所示物重G为600N用�轮组将重物匀速提升5m所用拉力F为250N�轮组的机械效率为 ．若不计�擦被提升的物重增加时�轮 sketch template

某人用如图15所示的�轮组吊起一个重1000N的物体�轮组的机械效率为80%他在5s内使绳子自由端移动8m求 1物体上升的高度和 sketch template

用如图所示的�轮组提升重物所用的拉力是100N动�轮重为80N则用此�轮组能提起 N的重物若将重物提高3m那么绳端要拉过 M．——青 sketch template

用如图所示的�轮组提升物体A在匀速竖直提升物体A的过程中卷扬机加在绳子自由端竖直�下的拉力F为400N物体A上升的速度vA为01m/s sketch template

如图所示某施工队利用�轮组从水中提取物体上升过程中物体始终不接触水底已知物体质量为4t体积为1m3．1物体完全浸没在水中时求物体 sketch template

用如图所示的�轮组匀速提升重为480N的物体G所用拉力F为200N将重物提升3 M所用的时间为10s．求 1重物上升的速度．03m sketch template

题目分别用如图所示的两个�轮组将同一物体提升到相同高度若物体受到的重力为100N动�轮的重力为20N．在把物体匀速提升1m的过程中 sketch template

如图所示使用�轮组提升重物时能够提高机械效率的方法是 A．改变绕绳的方式B．增加物体的提升高度C．减�物体的提升高度D．增加提升物的物重 sketch template

用如图所示的�轮组在20 S内将重600 N的物体从地面竖直提高4 M，所用的拉力是250 N，在这个过程中，求： 1有用功是多�？ 2 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

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