Which parameters affect about friction? and why?

M.KALEM
Messages
7
Reaction score
0
which parameters affect about friction? and why?
 
Physics news on Phys.org


Sounds a bit like homework.

What do you think affects friction of a surface?
 
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...
Back
Top