Answer
The average power output is 480 W.
Work Step by Step
$P = \frac{\Delta PE}{t}$
$P = \frac{mgh}{t}$
$P = \frac{(82 ~kg)(9.8 ~m/s^2)(83 ~m\times sin(33))}{75 ~s}$
$P = 480~W$
The average power output is 480 W.
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