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How much weight might Tyrannosaurus rex arms have been able to lift?
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tyrannosaur
The fossilized remains of Sue, the most complete Tyrannosaurus rex skeleton in the world, on display at the Field Museum of Natural History, Chicago.
Based on mechanical reconstructions, the musculature of the arms of Tyrannosaurus rex and other large tyrannosaurs suggests they could have been capable of lifting approximately 180 kg (400 pounds).12
Despite this potential lifting capacity, the forelimbs were very smallāmeasuring less than the length of the shoulder bladeāand the hands were unable to reach the mouth or grasp prey.12