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This question is about a system where one mass is on an incline and another hanging of it. They are connected with a rope.. Its a classical mass rope mass problem. My reasoning was that since the mass hanging of the cliff is pulling on the rope with a force of mg, the rope will be pulling the mass on the cliff with that same force.. so T (Tension force) on the mass on the cliff = weight of mass hanging of the cliff.

Using this reasoning i ended up with bad results for acceleration and tension force for the system. In books other approaches to these problems are used.. but i would like to know where my reasoning is wrong? Does it have to do with part of the force being neutralised by the edge of the cliff? (or in some problems a massless/frictionless pulley). Ofc we totally disregard friction and mass of rope in these problems.

thanks

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# Homework Help: Classical mass rope mass problem

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