Two boxes are connected by a cord running over a pulley. Box A sits on a table and has a mass of 5.0 kg while box B hangs
freely and has a mass of 2.0 kg. Box A moves to the right and box B moves
downwards. If the coeﬃcient of kinetic friction between box A and the table is
0.20, what is the acceleration of the system and the tension in the cord? You
may assume that the cord remains taut and does not stretch.
The Attempt at a Solution
The first part is fine i get 1.4m/s2
then the second part to calculate tension im lost with what to do:
where m1= 5kg
the answer is supposed to be 17N but when i solve for T i dont get anywhere near that...