Two masses,m1=18.0kg and m2=26.5kg,are connected by a rope that hangs over a pully.The pully is an uniform cylinder of radius 0.260m and mass 7.50kg.Initially,m1 is on the ground and m2 rests 3.00m above the ground.If the system is now released,use c

Two masses,m1=18.0kg and m2=26.5kg,are connected by a rope that hangs over a pully.The pully is an uniform cylinder of radius 0.260m and mass 7.50kg.Initially,m1 is on the ground and m2 rests 3.00m above the ground.If the system is now released,use c a mass of =masses of吗? 如图,两质量分别为m1=1kg和m2=4kg小球 英语翻译two masses,m1 and m2,connected to each other and to a central post by cords,rotate about the post at frequency f (revolutions per second) on a frictionless horizontal surface at distances r1 and r2 from the post.derive an algebraic expres m1=75kg,m2=168.5kg,斜面与m2,m2与m1间的摩擦系数均为0.04,求m2刚要移动时的角度. two boxes,m1=1.0kg with a coefficient of kinetic friction of 0.10,and m2=2.0kg with a coefficient of 0.20,are placed on a plane inclined at Θ=30.what acceletation does each box experience?If a taut string is connected to the boxes,with m2 initially 如图所示,物体A的质量是m1=2kg,长木板B的质量为m2=1kg.. 关于滑轮的物理题求受力、分解m1=6.4kgm2=3.4kg摩擦力忽略不计 一道高中物理题,求解,求详细答案 如图所示,m1重47kg,m2重35kg,m1和斜面的摩擦系数一道高中物理题,求解,求详细答案如图所示,m1重47kg,m2重35kg,m1和斜面的摩擦系数为μs=0.42 μk=0.19a）如果小明按 一道万有引力计算题求具体数字 计算机里面算不出来 Two 203-kg masses are separated by a distance of 0.96 m.Using Newton's law of gravitation,find the magnitude of the gravitational force exerted by one mass on the other. 某店将甲乙两种糖果混合在一起卖,单价为（a1*m1+a2*m2)/(m1+m2),m1、m2分别为甲乙糖的质量,a1、a2分别是甲乙的单价,a1=20￥/kg,a2=16￥/kg,现将10kg乙和一箱甲均匀混合,卖出5kg后,再加入5kg乙,这时单价 m1=3Kg,m2=2Kg,m3=1Kg.求m1下降加速度.忽略悬挂线和滑轮的质量、轴承摩擦和阻力,线不可伸长. 力学 运动学m1=2.5 kg,m2=1.5 kga=30°,b=45°忽略摩擦力求m1 m2 如图16-45所示,固定在轻质弹簧的两端质量分别是m1=0.5kg,m2=1.49kg的两个物体置于固定在轻质弹簧的两端质量分别是m1=0.5kg,m2=1.49kg的两个物体置于光滑水平面上,m1靠在光滑竖直墙上.现有一颗m=0.01 动量守恒之碰撞1,2两球在光滑水平面上同向而行,动量分别是P1=5kg*m/s,P2=7kg*m/s,1球从后面和2球发生碰撞,碰后2球动量变为10kg*m/s,则两球质量M1,M2之间关系可能为A,M1=M2 B,2*M1=M2C,4*M1=M2 D,6*M1=M2 已知m1=4kg,m2=1kg,u1=0.3,u2=0.1.m1可视为质点,m2上表面的长L=1m,g=10m/s^21)F=20N,求m1,m2之间的摩擦力f=?2)F=60N,求m1从m2的左端到右端的时间t=? 如图所示,m1=10kg 、m2=50kg,m2与墙壁间用一轻绳相连.m1 与m2 间、m1与地面间的动摩擦因数均为μ=0.5,θ=53o .现要将m1匀速拉出且m2保持不动.求：(1)绳对m2的拉力大小.(2)拉力F的大小（sin53°＝0.8,cos53° 20、在光滑水平面上,有一质量m1=20kg的小车,通过一根几乎不可伸长的轻绳与我不明白为什么μm3gs1=1/2（m1+m2）（v1^2-v2^2） 关m1什么事?20、在光滑水平面上，有一质量m1=20kg的小车，通过一根几乎