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如图所示，用两根长度均为L的细绳，分别把a、b两小球悬于同一高度，静止时两小球恰好相接触，a、b两小球大小相同、质量相等．现把a小球拉到与悬点等高的位置，细绳刚好被拉直，然后由静止释放，当a小球摆动...
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高三下学期物理《》真题及答案
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如图两个小球分别被两根长度不同的细绳悬于等高的悬点现将细绳拉至水平后由静止释放小球当两小球通过最低点
）速度 （
）角速度 （
）加速度 （
）机械能
如图两个小球分别被两根长度不同的细绳悬于等高的悬点现将细绳拉至水平后由静止释放小球当两小球通过最低点
速度
角速度
加速度
机械能
如图所示甲乙两个质量均为m的小球用两根长度相等的细线悬挂中间夹一轻弹簧两悬绳夹角为90°求弹簧的弹
如图所示B.和C.两个小球均重为G.用轻绳悬挂而分别静止于图示位置上试求1AB和CD两根细绳的拉力分
如图两个小球分别被两根长度不同的细绳悬于等高的悬点现将细绳拉至水平后由静止释放小球当两小球通过最低
速度
角速度
加速度
机械能
如图所示ACB是一光滑的足够长的固定在竖直平面内的∧形框架其中C
CB边与竖直方向的夹角均为θ.P、Q两个轻质小环分别套在CA.CB上，两根细绳的一端分别系在P、Q环上，另一端和一绳套系在一起，结点为O.将质量为m的钩码挂在绳套上，OP、OQ两根细绳拉直后的长度分别用l
1
、l
2
表示，若l
1
: l
2
= 2 : 3，则两绳受到的拉力之比F
1
: F
2
等于（ ） A.1︰1
2︰3
3︰2
4︰9
如图所示用两根长度都为L.的细绳悬挂一个小球A.绳与水平方向的夹角为α使球A.垂直于纸面做摆角小于5
如图所示用两根长度都为L.的细绳悬挂一个小球A.绳与水平方向的夹角为α.使球A.垂直于纸面做摆角小于
如图所示ACB是一光滑的足够长的固定在竖直平面内的∧形框架其中C
CB 边与竖直方向的夹角均为θ。P.、Q.两个轻质小环分别套在CA.CB上，两根细绳的一端分别系在P.、Q.环上，另一端和一绳套系在一起，结点为O.。将质量为m的钩码挂在绳套上，OP、OQ两根细绳拉直后的长度分别用l
1
、l
2
表示，若l
1
2，则下列说法正确的是： （ ） A.OP绳子拉力大
OQ绳子拉力大
两根绳子拉力一定相等
两根绳子拉力一定不相等
长度不同的两根细绳悬于同一点另一端各系一个质量相同的小球使它们在同一水平面内做圆锥摆运动如图所示则有
周期
线速度的大小
向心力
绳的拉力
用两根长度均为L.的绝缘细线各系一个小球并悬挂于同一点已知两小球质量均为m当它们带上等量同种电荷时两
2016年·上海八校联考模拟3月如图两个小球分别被两根长度不同的细绳悬于等高的悬点现将细绳拉至水平
速度
角速度
加速度
机械能
如图所示ACB是一光滑的足够长的固定在竖直平面内的∧形框架其中C
CB边与竖直方向的夹角均为θ.P.、Q.两个轻质小环分别套在CA.CB上，两根细绳的一端分别系在P.、Q.环上，另一端和一绳套系在一起，结点为O..将质量为m的钩码挂在绳套上，OP、OQ两根细绳拉直后的长度分别用l
1
、l
2
表示，若l
1
: l
2
= 2 : 3，则两绳受到的拉力之比F.
1
: F.
2
等于 A.1︰1
2︰3
3︰2
4︰9
如图所示ACB是一光滑的足够长的固定在竖直平面内的∧形框架其中C
CB边与竖直方向的夹角均为θ.P.、Q.两个轻质小环分别套在CA.CB上，两根细绳的一端分别系在P.、Q.环上，另一端和一绳套系在一起，结点为O..将质量为m的钩码挂在绳套上，OP、OQ两根细绳拉直后的长度分别用l
1
、l
2
表示，若l
1
: l
2
= 2 : 3，则两绳受到的拉力之比F
1
: F
2
等于（ ） A.1︰1
2︰3
3︰2
4︰9
两个相同的小球A和B质量均为m用长度相同的两根细线不考虑绳的质量及绳长的变化把A.B两球悬挂在水平天
如图所示有两个质量均为m带电量均为q的小球用两根等长的绝缘细绳悬挂在同一点O.处保持静止后悬线与竖直
2017年·上海崇明二模如图两个小球分别被两根长度不同的细绳悬于等高的悬点现将细绳拉至水平后由静止释
速度
角速度
加速度
机械能
用两根长度均为L.的绝缘细线各系一个小球并悬挂于同一点已知两小球质量均为m当它们带上等量同种电荷时两
如图所示为游乐园中空中转椅的理论示意图长度不同的两根细绳悬于同一点另一端各系一个质量相同的小球使它们
绳的拉力
线速度的大小
周期
向心力
如图所示长度都为L.＝0.8m的两根细绳一端系着同一个小球A.另一端分别系于两边墙上相同高度的两点两
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