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Homework Statement
A 6000kg helicopter accelerates upward at .6m/s^2 while lifting a 1500kg car. What is the tension in the cable (ignore the cable mass) that connects the car to the helicopter?
Homework Equations
F=MA
The Attempt at a Solution
Alright... so here's what I've been trying to do. The acceleration that is the acceleration due to gravity plus .6m/s^2 which gives an acceleration of -9.2. From there I would multiply the acceleration by mass to get the force of the helicopter and the car. So for the helicopter the force I get is 55200N and for the car it is 13000N. I add those forces together and get... the wrong answer. The answer is supposed to be 15600N and I can't figure out how.
I have a test coming up and I can't seem to do any tension problems to save my life; any help at all would be greatly appreciated.