The question and my work can be seen in the image below:
http://img145.imageshack.us/img145/550/scan0001fgu.jpg
The problem is that I am getting around 1 for acceleration, while the answer is 0.77.
What am I doing wrong?
Ah, I see, its one of those conservation of energy questions, isn't it?
Change in Ek + Change in Ep = the correct answer (5.0 x 10^7)
Thanks!
One thing bugs me though. Shouldn't these two add up to 0?
Homework Statement
A 1500 kg plane, initially at rest, leaves an airfield and a short time later it is at an elevation of 3200 m traveling at 65 m/s. What is the minimum work done by the plane's engine in this time? (Ignore air resistance)
Homework Equations
W=Fd, F=ma, and most...