A mass m is attached to a massless spring with a force constant k.The mass rests on a horizontal frictionless surface.The system is compressed a distance x from the spring's initial position and the released.The momentum of the mass when the spring p

A spring（k=400N/m)is hung vertically.a) if a 5kg mass is attached to the end if the spring and gently lowered to rest position,what will be the stretch of the spring?b) if the 5kg mass is attached and simply dropped,what will be the maximum velocit A mass m is attached to a massless spring with a force constant k.The mass rests on a horizontal frictionless surface.The system is compressed a distance x from the spring's initial position and the released.The momentum of the mass when the spring p A bullet of mass m traveling at velocity v strikes a lock of mass 2m that is attached to a rod of length R.The bellet collides with the block at a right angle and gets stuck in the block.The rod is free to rotate.What is the centripetal acceleration 关于力矩torque的物理题A string is wrapped around a uniform disk of mass M = 1.5 kg and radius R = 0.11 m.(Recall that the moment of inertia of a uniform disk is (1/2)MR2.) Attached to the disk are four low-mass rods of radius b = 0.19 m,each 大一物理题.A uniform steel rod of length 1.20 m and mass of 6.40 kg has attached to each end a small ball of mass1.06 kg.The rod is constrained to rotate in a horizontal plane about a vertical axis through its midpoint.At a certain instant it is One end of a horizontal string of linear density 4.8*10^-4kg/m is attached to a small amplitude mechanical 60-Hz vibrator.The string passes over a pulley,a distance L=1.40m away,and weights are hung from this end.What mass must be hung from this end A ball of mass m is attached to a string of length L.It is swung in a vertical circle with enough speed to keep the string taut throughout the motion.Assume the ball travels freely in the circle with negligible loss of mechanical energy.Determine if SAT2物理题,涉及弹簧An object of mass m is attached to a vertically mounted spring that has spring constant k.The object is displaced from its equilibrium position and allowed to oscillate.Assume that air resistance and friction are negligible. a mass sat2 物理题TATAt the surface of the earth,an object of mass m has a weight w.if this object is transported to an altitude that’s twice the radius of the earth,then,at the new location,A.Its mass is m/2 and its weight is w/2 B.Its mass is m and i A highly volatile substance initially has a mass of 1200g and its mass is reduced by 12% each second.Q1.Write a formula that gives the mass of the substance(m) at time(t) seconds.Q2.Rearrange this formula to make t the subject.Q3.What mass remains af A horizontal spring,resting on a frictionless tabletop,is stretched 17cm from its unstretched configuration and a 1.00-kg mass is attached to it.The system is released from rest.A fraction of a second later,the spring finds itself compressed 3.4cm fr 英语翻译A A bungee jumper is attached to one end of a long elastic rope.The other end of the elastic rope is fixed to a high bridge.The jumper steps off the bridge and falls,from rest,towards the river below.He does not hit the water.The mass of 关于第25届IYPT的物理题目,求灵感2.Cutting the airWhen a piece of thread (e.g.,nylon) is whirled around with a small mass attached to its free end,a distinct noise is emitted.Study the origin of this noise and the relevant parameters.5.Brig Enter N/A if resume is uploaded or attached It is nothing short of a mass exodus. 含义同上! The figure below shows a homogeneous bar of mass M and length L,with one end attached to a hinge on a wall and the other end supported by a string.问题是如何计算墙对杆的力的大小及方向?我有发图，你们看不到吗？ a solid cylindrical flywheel is 1.2m in diameter and has a mass of 910kg.If the axle is 150mm i...a solid cylindrical flywheel is 1.2m in diameter and has a mass of 910kg.If the axle is 150mm in diameter and the coefficient of journal friction is 0.1