Eli5: How do alligators achieve their incredible bite force when the load arms are much longer than the force arms?

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It’s a third class lever meant for speed if i understand it correctly? Or does the psi force measured come from the speed? If so then why isn’t it easy to pry their jaws open when applying resistance at the very end of their jaws?

In: Physics

2 Answers

Anonymous 0 Comments

Alligator’s jaw muscles can produce 3000 psi when closing their mouths, and those muscles can continue to produce that force (more or less) to keep the mouth shut. They also happen to be able to snap their jaws closed at high speed, but that doesn’t keep them from maintaining the downward force (assuming the gator is right side up). You can do the math applying forces with levers and all that, but it doesn’t change the way the muscles work.

Anonymous 0 Comments

While being a third class level means you need more force input to do the same output, you *can* keep ramping up how much force you put in. So while they don’t get any advantage from the way their jaws lever, the sheer power of the muscle makes up for it.