Thank you, this was really easy to understand. Torque seems to be the same thing as moment -- am I correct to say this? The only difference between them seems to be that torque has that weird unintuitive direction (into and out of the page), do we need this direction in calculations? It seems redundant but I'm still learning. Seems easier to picture the directions as clockwise and anti-clockwise like in moment calculations, similar to what you described from 12:07 onwards. Thanks again for the great lesson!
this was really helpful! i am a little confused on how the right hand trick (for the direction of torque) works, though. is there another good way to estimate it?
It works a bit like the right hand rule for electromagnetism - some quantities in physics work orthogonal to each other (at 90 degrees). The right hand rule to find the direction of torque is just a nice trick for us to use in order to find the vector direction of the torque. The equations are used to find the size (magnitude) of the torque. It's a bit weird though, I know :)
![HL Torque [IB Physics HL]](/img/logo.svg){kind=logo}
