Please match the phase name with the correct description for the five Stages of change
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Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

Which one of the following research methods can show cause and effect

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.