OK, here's the scenario:
We have a helicopter lifting someone out of the water via a rope. The person has a mass of 79kg and he is being accelerated upwards at 0.7m/s^2.
I also need to calculate work being done by the tension in the cable and by the person's weight.
So, I think the tension would be T=mg+ma, is that right?
The Attempt at a Solution
So the total tension would be the tension due to gravity (weight) plus the tension caused by the upward acceleration...?
As far as work is concerned...If the above is true, the tension in the cable would be 829.5N, and he is being lifted up a distance of 11m, parallel to the cable.
So my initial thought was that the work done by the tension in the cable would be W=829.5*11, is that right?
And then I don't think the person's weight is actually causing any movement, so there would be no work because of that, correct?
Ugh, tension confuses me sometimes....
Thanks in advance, though.