The robotic rover curiosity has instruments that detect radiation both inside the spacecraft and in the mars environment. what is most likely the purpose of this radiation detection? a. to determine whether human exploration of mars is possible b. to develop better x-ray technology c. to find evidence of once-living martian microorganisms d. to investigate evidence of hydrogen and water

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.