An 8kg mass is initally at rest on a 30 degree frictionless incline, it is attached to a hoop shaped 5kg pulley of radius 25.0cm by a massless cord. Find the tension in the cord and the acceleration of the mass using Newton's Laws.
I showed you where, in post #3Where did I go wrong so I can correct this....
that's right!Whoops i didn't catch the whole effective mass part of that shortcut,
so it should come out to M=13 therefore a--> 8(9.81sin30)/13 = 3.02