a patient is given an intravenous drip from a bottle of fluid in a patients arm. at what height above the arm should the bottle be placed so that the gauge pressure of the fluid entering the vein matched the patients blood pressure of 1063.2pa? assume the fluid is the same density of blood

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.