Recent content by eliad

you mean a rod is restricted to only a specific object? i think of it as a shape, like a circle can be a variety of objects.

this video shows the phenomenon, watch closely from 20:00 and notice that. anyway, was anyone troubled about that?

maybe, but i suspect that the explanation is in the atoms level..

i mean something like a log on a wooden rod.

obviously not a road

at the beggining of basic mechanics, we learned about friction, moreover we distinguish between static and dynamic friction. there is something quite disturbing: when an object on an inclined rod is static we can say that the static friction is holding it in place. now, whe we push the object up...