Recent content by JoshBuntu

I tried looking it up, but I just don't get it. Something about intensity going to infinite(?) What exactly was the original theory and how does the "quantized" theory account for stuff? I'm sorry if this is a dumb question :/

Conservation of energy? Ohh uhhh...is there another way? We didn't learn energy yet so I'm assuming there's another way to do this...

Homework Statement There is a loop-the-loop, thing, and a dude on a bicycle is going to ride around the loop. Total mass is 1 kg (I'm aware that isn't realistic at all...) and radius is 10 meters. a) what is the minimum speed that the cyclist must have to make it over the top of the loop...

Yay! (: But WAIT? "there must be a "+" between mass of A and mass of B in the numerator" There is no mass of B in the numerator... was I supposed to have one there? Because I solved the equation just as I typed it here with only multiplication in the numerator and got 36.8 Newtons...

And thank you ehild! Now I get it, I think. Tension2 is pulling down on block B along with the weight of block B. These 2 forces together are greater than Tension1. okokokok. Before I wasn't really getting what tension 2 was actually doing it. It's pulling down on block B and pulling up on block...

Woah, woah, I think I got this. Is the final formula for Tension2: Tension2 = [(mass of A)(mass of C)(gravity)]/[(mass of C) + (mass of B) + (mass of A)] with the answer for tension 2 being 36.8 Newtons?

THERE is where I have a problem! block C is hanging on the rope, so it's creating a tension. So like, block B is kind of acting like a ceiling that block C is hanging from by a rope - how does block B constitute a tension to the second tension? Isn't block B just falling while block C is pulling...

Ok so tell me if I'm right! The second tension (Tension2) between B and C is (Tension2)=(mass of C)(acceleration) and (Tension1)=(mass of A)(acceleration) so I think the correct form of the second equation that I previously got wrong is: (mass of B)(gravity)+(Tension2) - (Tension1) = (mass of...

:O Ok I will try that right now! Don't leave me!

Ok, so, for free body diagrams: Mass A, normal force acting up and weight acting down which cancel each other, and Tension1 acting to the right Mass B, Weight acting down and Tension1 acting up, weight greater than Tension1(?) Mass C, Weight acting down and Tension1 acting up, weight greater...

Homework Statement The diagram is here http://img375.imageshack.us/img375/5930/tensionproblem.png What is the tension in the cord connecting B and C? How far does A move in the first 0.250 seconds of movement assuming it does not reach the pulley? Homework Equations F=ma The...