如图甲所示为古人巧妙应用杠杆的智慧结晶——舂，当人用力踩横木一端时，松脚后横木绕某点转动，另一端碓头下落，击打石臼内的谷物。图乙是用力踩在横木 Sketch Coloring Page

如图甲所示为古人巧妙应用杠杆的智慧结晶——舂，当人用力踩横木一端时，松脚后横木绕某点转动，另一端碓头下落，击打石臼内的谷物。图乙是用力踩在横木 Template

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sketch #5070 The Rolling Stones by Roby Krdoso

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sketch #3535 Mickey by Hakan Usuğ

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sketch #3575 Stitch by Laura Gutierrez Hinojosa

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sketch #4934 Nami-Ki Roberto Castro Colimil

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anonymous
sketch #4934 Nami-Ki Roberto Castro Colimil

sketch #5093 Pedro Henrique Jordan Coquet

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sketch #5093 Pedro Henrique Jordan Coquet

sketch #3157 umpa lumpa

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sketch #3157 umpa lumpa

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sketch #2035 Ernest Hemingway...
chayrolfrypan

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sketch #2035 Ernest Hemingway... chayrolfrypan

sketch #3908 Rawr! by Timothy Palfreyman

anonymous

anonymous
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anonymous
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sketch #2937 Spongebob by Kalana Namikaze

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sketch #5228 Rin & Len by Mark Phillips

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anonymous
sketch #5228 Rin & Len by Mark Phillips

tomski如图甲所示为古人巧妙应用杠杆的智慧结晶——舂，当人用力踩横木一端时，松脚后横木绕某点转动，另一端碓头下落，击打石臼内的谷物。图乙是用力踩在横木 coloring

如图甲所示为古人巧妙应用杠杆的智慧结晶——舂，当人用力踩横木一端时，松脚后横木绕某点转动，另一端碓头下落，击打石臼内的谷物。图乙是用力踩在横木 sketch template

如图16所示是古书《天工开物》中描述人们用舂chong来捣谷时的情景。若在A点悬挂的物重为60NOAOB=43则捣谷人在B点至�需 sketch template

从宋代《天工开物》看古代�技与力学的相互影响知乎 sketch template

如图所示是古代入撬石头时的示意图请在图中画出力F对支点O的力臂并用字母L标明．题目和参考答案——青夏教育精英家教�—— sketch template

7．桔槔是�国古代劳动人�在生产实践中�明创造的一种巧妙地运用杠杆原理的提水工具．如图所示设配重A重30NCODO=21木桶重20N sketch template

汉字博物：说“舟”，世界上最早的舟至今多�年，舟是如何制作的 独木舟 sketch template

投石机是�国古代一种有力的攻城武器它的主体是一个杠杆可用其将巨石抛出．如图乙是一个简易投石机抛出石头的过程AOB为主体杠杆O为支点．B sketch template

如图甲所示，桔槔是�国古代汲水的一种器具，可看作杠杆，图乙是其简化示意图。请在图乙的A点中作出水桶所受重力G的示意图，并画出力F1的力臂l1。 sketch template

如图所示是古人锻造铁器的过程关于改变物体内能的方式下列说法中正确的是 A 加热和锻打属于热传递淬火属于做功 B 加热属于热传递 sketch template

如图所示小柯积极参加体育锻炼．1图甲所示为小柯初学俯卧�时的姿势图乙所示为他经练习后的俯卧�姿势．图乙中小柯双手所受的支持力＞＞图甲的 sketch template

百度教育 sketch template

如图所示是利用杠杆撬起一质材均匀的球形石头的情景O是支点．请在图中画出石头的重力示意图以及重力和力F的力臂并分别用字母L1和L2表示．——青 sketch template

题目某同学利用如图甲所示实验装置验证机械能守恒．半圆盘固定在竖直平面内盘面的水平刻度线标注着距离悬挂点O的高度�属小圆柱用细线悬挂于O sketch template

如图所示AB是一杠杆可绕支点O在竖直平面内转动AOOB=23ODDB=11�轮重为100N．当在B点施加大小为F的竖直�下的 sketch template

小华利用如图甲所示的实验装置观察水的沸腾实验．1组装器材时应先固定B．2安装好实验器材后小明在烧杯中倒入热水纠正错误后温度计示数 sketch template

如图甲所示一质量为m =1kg的小物块静止在粗糙水平面上的A点从t = 0时刻开始物体在受如图乙所示规律变化的水平力F作用下�右运动第 sketch template

如图所示甲乙两位同学做“拔河游戏．两人分别用伸平的手掌托起长凳的一端保持凳子水平然后各自�两侧拖拉．若凳子下表面各处的粗糙程度相同 sketch template

12．如图甲所示在x轴上有一个点电荷QOAB为轴上三点放在AB两点的检验电荷受到的电场力跟检验电荷所带电荷量的关系如图5乙 sketch template

题目如图所示固定的半圆形竖直轨道AB为水平直径O为圆心同时从A点水平抛出质量相等的甲乙两个小球初速度分别为v1v2分别落在 sketch template

如图所示甲乙两图都是用来“验证机械能守恒定律 的装置示意图已知该打点计时器的打点�率为50Hz．重力加速度为g1甲乙两图相比较 图 sketch template

如图所示塞子从试管口跳出是由于水蒸气对塞子做了功这个过程中能量的转化是 A 内能转化为机械能 B 化学能转化为内能C 机械能 sketch template

如图所示小明分别用甲乙两�轮把同一桶沙子从一楼地面提到二楼地面用甲�轮所做的总功为W1机械效率为η1用乙�轮所做的总功为W2机械效率 sketch template

题目如图所示轻质弹簧的一端固定在墙上另一端与质量为m的物体A相连A放在光�水平面上有一质量与A相同的物体B从高水平面高h处由静止 sketch template

如图所示甲乙两人将一木箱从一楼抬上三楼甲对木箱做的功 乙对木箱做的功填“大于 “等于或“小于．题目和参考答案——青夏教育精英 sketch template

如图甲所示，用刻度尺测量一物体的长度，物体的长度为cm；如图乙所示，图中是分度值为01s的机械秒表，其示数是s。 sketch template

把一小石块挂在弹簧测力计下示数如图1所示然后慢慢地把小石块浸没在水中弹簧测力计示数如图2所示．实验可知小石块所受的浮力是0808 N sketch template

小李在“探究物质熔化规律”实验中，所用装置如图甲所示。�在安装器材时应按照选填（“从上到下”或“从下到上”）的顺序安装器材；�从图乙可知物质在 sketch template

体积相同而材料不同的小球甲、乙、丙、丁静止在容器的水中如图所示这四个小球所受的浮力分别为F甲、F乙、F丙、F丁则下列判断正确的是 A sketch template

如图甲所示是小明“探究电流与电压、电阻的关系”的实验电路图。选用的实验器材是：电源3V、电流表（00 6A）、出卷� sketch template

小敏用如图甲所示的电路图研究通过导体的电流与导体电阻的关系电源电压恒为6V改变电阻R的阻值调节�动变阻器�片保持R两端的电压不变记 sketch template

如图所示是小明利用透明玻璃板“探究平面镜成像特点”的实验装置。�实验中选择两根完全一样的蜡烛A和C，是为了比较像与物的 关系；�小明将蜡烛A sketch template

在“用电流表测电流 的实验中某同学连接的电路如图所示．1闭合开关观察到灯泡L1和L2的�光情况是 ．2针对上述现象该电路存在的 sketch template

如图所示，电源电压恒为18V，定值电阻R1=20Ω，�动变阻器R2标有“40Ω 05A”，电流表A的量程为006A，电压表量程为0 sketch template

百度教育 sketch template

百度教育 sketch template

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