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?

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anonymous

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sketch #521 A hungry caterpillar

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sketch #4555 Mario by Alexander Volodimirovich Danilchenko

anonymous

anonymous
sketch #4555 Mario by Alexander Volodimirovich Danilchenko

sketch #5231

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sketch #3208 ELETR by Raimundo Santos

anonymous

anonymous
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sketch #4905 The Little Prince by Gaurav Patel

anonymous

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sketch #5131 Miley Cyrus by Vannak Von

anonymous

anonymous
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anonymous

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sketch #2926 Power Puff Girls by Sylvie Rieux

anonymous

anonymous
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sketch #2477 hhhh

anonymous

anonymous
sketch #2477 hhhh

sketch #3626 Skream by Wellen Lima

anonymous

anonymous
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anonymous

anonymous
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anonymous

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sketch #5073 Broken Heart by Islam Mourad

anonymous

anonymous
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anonymous

anonymous
sketch #3280 Adventure Time by Alina Danielle

sketch #3261

anonymous

anonymous
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sketch #3388 Fight Club by Alvaro Velasquez

anonymous

anonymous
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anonymous
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sketch #5135 &#;Hypno Colorfull&#; by Lars Tunebo

anonymous

anonymous
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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对绳的拉力为600N则�轮组对重物所做的有用功W有用 sketch template

如图所示某工人用�轮组在1分钟内将重103N的重物提高2m所用的拉力是600N求1工人通过�轮组所做的有用功 2工人做的总功 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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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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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

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

如图所示建�工人用�轮组提升重为240 N的泥桶动�轮重为30 N不计�轮与轴之间的�擦及绳重若工人在10 S内将绳子匀速�上拉9 M 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

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

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

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

利用如图所示的甲乙两�轮组在相同的时间内用大小相同的力F1和F2分别把质量相等的重物G1和G2提升到相同的高度则 A．甲�轮组的机械 sketch template

如图所示�路工人用撬棒撬石头请画出动力F的力臂——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

�线轮的方程和绘图总结知乎 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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

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

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

题目小群利用如图甲所示的�轮组将水中物体匀速提升到空气中他所用的拉力F与绳子自由端移动的距离s的关系图像如图乙所示物体在空气中匀速上升 sketch template

一轮复习：阿特伍德机类型知乎 sketch template

百度教育 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

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

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