如图所示,在倾角为θ的光滑斜面上有两个用轻质弹簧相连接的物块A

如图所示,在倾角为θ的光滑斜面上有两个用轻质弹簧相连接的物块A 、B .它们的质量分别为mA、mB,弹簧的劲度系数为k , C为一固定挡板。系统处于静止状态。现开始用一恒力F沿斜面方向拉物块A 使之向上运动,求物块B 刚要离开C时物块A 的加速度a和从开始到此时物块A 的位移d。重力加速度为g。

 

答案

 

解析:略

 

相关题目

下列属于生物因素对生物影响的是 (   )A.春来江水绿如蓝
下列属于生物因素对生物影响的是 (   )A.春来江水绿如蓝                    B.种豆南山下,草盛豆苗稀C.雨露滋润禾苗壮            
______ about wild plants that they decided to make a trip to Madagascar for furt
______ about wild plants that they decided to make a trip to Madagascar for further research. A.So curious the couple were                    B.Such curious the couple were 
--This desk is too heavy.I _______ move it.Could you help me? --No problem
--This desk is too heavy.I _______ move it.Could you help me? --No problem. A.can               B.can't               C.should              D.should
下列化学反应的离子方程式正确的是(     )     A.在
下列化学反应的离子方程式正确的是(     )     A.在稀氨水中通入过量CO2:NH3·H2O+CO2=NH+HCO     B.少量SO2通入Ca(ClO)2溶液中:SO2+H2O+Ca2++2ClO-=CaSO3+2HC
甲地海拔400米,乙地海拔200米,则甲乙两地相对高度: A.40
甲地海拔400米,乙地海拔200米,则甲乙两地相对高度: A.400米                 B.200米                 C.600米                
I’ve started driving again. I drove along a road ___21___ 12 years ago near
I’ve started driving again. I drove along a road ___21___ 12 years ago near my home. As I drove tonight I___22___Kelly. Kelly was a ___23___ when it was constructed. She and her brother were ___2
已知二次函数的两个实数根分别是 (1)设函数的对称轴为
已知二次函数的两个实数根分别是 (1)设函数的对称轴为 (2)如果
Simon_________ his fingers when he was cook­ing the dinner.A.burntB.was bur
Simon_________ his fingers when he was cook­ing the dinner.A.burntB.was burningC.has burntD.had burnt

最新题目