Recent content by Trevormbarker

centripetal/centrifugal forces. Do a quick google of artificial gravity, there will be lots of info.

Newton said momentum was an objects "total quantity of motion." Assuming were only dealing with classical physics its an objects mass*velocity. Momentum increases is either mass or velocity increases. It is always conserved , just like energy. I am sure khanacademy has a good video on it

Yeah we actually did the experiment yesterday, and it worked pretty well, and it did pretty much what you just predidicted. Thanks a lot for the help! I'll see if we can work through that. but also since their are 2 masses would the problem not have to take that into consideration, I am guessing...

Homework Statement Essesntially me and my friend for our physics ISP (which is like a final project in ontario) are building this gravitational torsional balance: http://www.fourmilab.ch/gravitation/foobar/ Our set up is very similar, with our main balance arm being 30cm long , 5cm wide and...

It is wierd, but that's how it works! I can't seem to find it now but i was stuggling with this awhile ago and one of the mentors gave me an awesome link. But anyways yeah that's relitivities theory on it! I think it is important to understand that it is space time that is curved, not space and...

when we travel forwards through time we ARE experiencing some kind of motion. Mass and energy bends space-time not just space. I think what you are asking is similar to this: having a ramp in space and placing a ball on the top, the ball would not roll down the ramp. So you are asking what...

curving of space-time! not just space, you are always progressing through the time dimension of space time, hopefully that clarifies this!

check this link: http://scienceworld.wolfram.com/physics/Torque.html?affilliate=1 I do not know if it can be derived from F=ma though, as a and f are always in the same direction... And if you apply a force on an object not through its center off mass then the object will rotate, not in the...

the reason torque "exists" is because if you apply a force to an object that is not through the objects center of mass it will try to rotate. The further from the center the mass is it the force could be weaker but provide the same amount of torque

You may find it usefull to break your forces into componets that are perpendicular and parrallel to the surface of the ramp. ie for the force of gravity use mgsin(theta) where theta is the angle of the ramp

I just did a quick browse, but this is great, I had read calculus for dummies as my first introduction to the subject and this is of equal if not better quality. Plus its free! thanks a lot, this is great!

This is a quote I read and I am having problems understanding it: "Lift is produced by the changing direction of the flow around a wing. The change of direction results in a change of velocity (even if there is no speed change, just as seen in uniform circular motion), which is an...

Well sorry I was explaining the possible directions of tension, but you know if your example the object was not accelerating so the forces must be balance, the direction of the tension (both t1 and t2) would be up

Yes, It is essentially 1-dimmensional, a good example is 2 cars with a rope attached to their bumpers driving away, if the rope is non elastic, then tension will increase immediatly and the force exerted by the tension in the rope will pull each car towards the other. If that makes sense. Edit...

basically tension is how much "pulling force" a string has, ie if you were to tie a rope to a wall and pull just till there is no slack, the rope will be horrizontal but there is not much tension, if you keep pulling the tension increases which in turn causes a higher pulling force at the end of...