Which is an example of an unintentional injury? a student decides to cut herself. two people have a domestic dispute that leads to one person hitting the other. a man sexually assaults a woman in a parking lot. a student slips on the ice in front of school and sprains his ankle.

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.