Science Memes

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bitey (mander.xyz)

submitted 1 month ago by [email protected] to c/[email protected]

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[–] [email protected] 20 points 4 weeks ago (1 children)

Given:

Bite Force of T. rex: 45,000 Newtons

Jaw Closing Distance: Approximately 0.3 meters

Energy=Force×Distance=45,000N×0.3m=13,500Joules

Say we have a typical 10w led lightbulb, how much could it power it for?

Time= Power/Energy=13,500J / 10W=1,350 seconds, or approximately 22 and a half minutes with a single T-Rex chomp, assuming 100% conversion efficiency

[–] [email protected] 16 points 4 weeks ago

Fun fact, the (rough) conversion efficiency of calories to mechanical joules in the human body (separate from the mechanical to electrical you're referring to) is about 25%

but this is about the same factor as going from calories to joules! So, for a human to put out 13.5 kJ of energy would require about 13.5 food calories (kilocalories).