Recent content by Jir

A few days after new year, so Happy new year everybody :). I found this in the link Doc Al posted: http://hyperphysics.phy-astr.gsu.edu/hbase/relativ/bugrivet.html#c1 I understand most what is written there, but what I don't understand is why its still a paradox. A good Theory should...

Thanks for the very clear explenations. Helped me allot :)

Recently I started reading about relativity and found this flaw like thingy. I asked a friend of mine who studied physics and he came with the unsatisfying answer: 'at speeds like that everything kind of blurrs so the spearman won't crash into the door'. Is the following correct and a paradox...

First of all, they both carry the same weight. Secondly I am asuming they both weight the same (the stick and arm). The arm counteracts the gravity force in a different way the stick does though. Stick bends (elastic energy), Arm uses muscles (chemical energy) "Jir's explanation is...

Just the steering wheel and you who leans a bit to the left or right. For the rest the road is perfectly straight, horizontal and flat. I have already found out why the bike maintains its balance while going in circles.

imagine this: (this part is a stick) -------------------- | | |<-----fishing line with weight on it O obviously the stick bends (and is already bent because of its own weight). however if you replace the stick with your arm, your arm will not bend (only slightly but we can ignore that)...

Hi everybody, I'm new to this forum. I came here cause I need some help for my school project. If anybody can help me, I apreciate it allot. The bicycle problem (now i think about it, bicycle can also be replaced by boat, plane or any other moving object): The bicycle makes a turn of...