Who was the first to define torque?

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The discussion centers on the historical definition of torque and its evolution, particularly questioning when the concept began to include the cross product of force and distance. Participants reference Archimedes as a potential starting point but seek clarity on the timeline. The conversation also touches on the contributions of Daniel Bernoulli and Leonard Euler in the post-Newtonian era. Euler's second law of rotational motion is highlighted, stating that the sum of external moments equals the rate of change of angular momentum. The thread reflects a shared curiosity about the complexities and historical context of torque in physics.
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ans waht year was it?
 
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Mad_Eye said:
ans waht year was it?

Is this for homework? What is the context of your question?
 
I too have the doubt.. The wiki article doesn't explain it in detail. If it started with archimedes, when did the definition begin to include the cross product of force and distance?
I remember someone here saying that the scariest thing in science according to him is torque (the thread was active a few weeks before). I share a part of that fear. :)
 
Hmm..this belongs to the first post-Newtonian generation, particularly the works by Daniel Bernoulli and Leonard Euler.

http://en.wikipedia.org/wiki/Euler's_laws#Euler.27s_first_law

Euler's second law of rotational motion says that the sum of external moments equals the rate of change of the object's angular momentum.
 

Thread 'Derivation of Hamilton's Principle: Questions'

I have recently been really interested in the derivation of Hamiltons Principle. On my research I found that with the term ##m \cdot \frac{d}{dt} (\frac{dr}{dt} \cdot \delta r) = 0## (1) one may derivate ##\delta \int (T - V) dt = 0## (2). The derivation itself I understood quiet good, but what I don't understand is where the equation (1) came from, because in my research it was just given and not derived from anywhere. Does anybody know where (1) comes from or why from it the...
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