An airplane's weight ranges from under 1000 lbs to over 500 tons.
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A typical Boeing 747 airplane weighs around 600,000 pounds (300 tons)
64,000 pounds = 32 tons, and it doesn't matter if it's 64,000 pounds of water, lead or feathers.
The largest whale on record is the blue whale is that of 115 feet and weighing 136 tons. Average whale sizes: Orca whales can measure 32 feet and weigh 10 tons. Blue whales can measure 106 feet and weigh 176 tons. Finback whales can measure 82 feet and weigh 79 tons. Sei whale can measure 51 feet and weigh 30 tons. Right whale can measure 50 feet and weigh 110 tons. Humpback whale can measure 52.5 feet and weigh 50 tons. Sperm whale can measure 59 feet and weigh 44 tons. Grey whale can measure 36 feet and weigh 35.5 tons. Pilot whale can measure 20.3 feet and weigh 3 tons.
Airplane? What airplane? My paper airplane wings weigh less than 8 grams.
m=10 tons x 62.16 slugs/1 ton = 621.6 slugs
in an airplane
Most people are surprised how much airplanes weigh, and engines too. Reciprocating engines typically weigh 1 pound per HP. Big jet engines weigh 0.2 pounds per HP or so and they typically weigh from one ton to several tons. Here a simulator for designing your own engine: http://www.grc.nasa.gov/WWW/K-12/airplane/ngnsim.htm
Adult population has a massive variations. They can weigh from 30 tons to 80 tons. Newborns weigh at 2 tons.
10000 is 10 tons.
6,800 tons
3 tons