You've got the technical replies, but heed the post from GEvens.
Yes, you could indeed be in danger of damaging your hearing over a period of time. You would be well advised to wear some kind of ear protection as the damage done when young often doesn't become apparent until later in life -...
You need to research this a little more. If you Google RC-280SA you will find many references. From the data sheet you already have, you should be able to see that a 12V power supply would be inappropriate here. Can you see why?
You can't necessarily tell if a motor is AC or DC just by...
You have signally failed to understand what I was saying - and probably confused the original poster completely! Where did I suggest that the tension was doubled?
Let me try to put it in very simple terms: the locomotive is like a person on one end of a string; the frictional force is like...
Either I'm missing something here or this is a classic case of responders overthinking the problem!
Going back to the original post, the question asked was: "What's confusing about this is that the Tension should be acting against the pull of the locomotive, which is what the friction is doing...
Logically, when a car travels round a bend, it should be most 'comfortable' to stay as wide on the bend as possible, as the turning radius will be greater and therefore the forces acting outwards at a given speed will be less. (In the limit, a bend of infinite radius - ie a straight line - will...