Quote:
Hugh Beyer wrote:
.. if you're going to push a car everyone, from grandma to the local strongman pushing a Mac truck, will use bent arms. Yet any force/vector model would surely show that this is inefficient--that you ought to keep your arms straight, arm bones lined up with the force you're applying to the car.
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I hope this is playing into your thought experiment- We push a car that way because it pushes back intermittently and we have to absorb that shock. Plus have a little slack to exert some extra strength at advantageous times.