Recent content by frkCarl

Homework Statement In the following figure we have an homogeneous L-shaped bar that has weight 120N. It's articulated without friction at point A. It's vertical part has length 1m and its horizontal part has length 3m. Find the intensity of F that maintains the bar in equilibrium. 2 ...

Homework Statement It's not a problem per se, I'm just trying something, so there's no statement. What I'm trying to do it's to prove the forllowing equation but without using the member of the right. (cos(36º) + 1)²/(cos(36º)) = 5cos(36º) There's the trivial answer, using both members, that...

Damn, I can't believe I spent so much time on this because I simply wasn't careful reading the graph :cry::cry:. Upon further inspection in my printed graph, the only point which is exact from those I cited is (200;60), even (150;50) and (100;40) are slightly off. Thank you so much for...

Homework Statement A researcher studies the heat transference between an iron block and an unknown substance, inside an adiabatic calorimeter. In successive experiences he puts inside the calorimeter the unknown substance, always in its solid state and with temperature θs = 20ºC, and the iron...