Recent content by pedrovisk

The exercise is based on a real experiment named "Ruchhardt experiment". This experiment aims to calculate \gamma (Cp/Cv). The ball in the bottle follows SHM. So it is possible calculate \gamma finding the period of this SHM. The equation of the force that makes the ball go back to equilibrium...

Elaborate, please. But got the answer in another forum, so no need for reply.

TL;DR Summary: Problem said that the ball moves in a harmonic motion and asked to prove it. The process is adiabatic Problem said that the ball moves in a harmonic motion and asked to prove it. The process is adiabatic. I did the development, but at certain point I'm having a problem. The...

Thanks, you are absolutely right. I was having trouble to understand rotations as a extension of Newton's laws. Asking the same question I did to Orodruin, what is a possible interpretation for the pic? Did it have a meaning or I should just torn it apart the paper and throw it to the trash...

Can't believe i forgot about this. Basic Newton's first law for rotations. I think I was confused when I was trying to rotate a bar like that. I probably just forgot about the friction. Anyway, now I'm curious. Is there any meaning for the pic I attached?

Hi! The bar is at static equilibrium. What I meant with this force F is what "push" I need to do in order to "win" the moment of inertia.

EDIT: I forgot about Second Newton's law for rotations and this led to a mistake. Anyway, thanks for the people who answered it and remembered me about law of inertia. I was thinking about how to "make" things to move without rotate the object, then i tried to calculate the minimum force to...