depends
69552 J
Step-by-step explanation
Potential energy is the energy that is stored in an object due to its position relative to some zero position, it depende on the mass of the object, the acceleration of gravity and the height

also

hence

Step 1
Let
a) let
weigth= 966 N
heigth = 72 m
b) now, replace

therefore, the answer is
69552 J
I hope this helps you