Mass = 55 megagram = 5.5 x 10⁷ grams = 5.5 x 10⁴ kilograms
Gravity (on Earth) = 9.8 m/second²
Height = 500 cm = 5.0 meters
So we have ...
Energy = (5.5 x 10⁴ kilogram) x (9.8 m/s²) x (5 m)
= 2,696,925 joules .
That's quite a large amount of energy ... equivalent to straining at the rate of 1 horsepower for almost exactly an hour, or burning a 100 watt light bulb for about 7-1/2 hours.
The reason is the large mass that's being lifted. On Earth, that much mass weighs about 61 tons.
