I'm not sure if this is correct, but I came up with the formula frequency (f)= square root (tension+weight)/2pi*radius*sqareroot (mass). This would be the frequency expressed in terms of tension, radius, and mass at the top of a vertical circle, but I'm not sure whether this pertains to your...
My physics teacher told me the answer to any supposed perpetual motion machine is simply "No." End of story. Even if someone says "Wait, wait! I finally have it!"..."NO!" or "This is it, the long anticipated perpetual motio..." "STOP RIGHT THERE, NO!" Basically the world will stop when that...
Easier said than done...I remember learning for the first time that there's really no real force called centrifugal force and that gravity isn't an actual force. We should remember that our modern view of the universe didn't develop overnight, but rather, was a gradual process spanning over...
Alright, in that case I'll put Einstein aside for now. But the author of the book is a guy by the name of Paul Hewitt, and I was under the impression that he has a real knack for physics, so I'm a bit surprised he might have erred or misunderstood such a concept.
An English translation perhaps? Thanks. I don't know about you, but I'm not exactly a Latin scholar. And another thing, I meant a copy in book form, such as my copy of St. Thomas Aquinas's "Summa Theologica".
No matter how hard I try, I still can't grasp Einstein's second postulate of special relativity. It seems to defy common sense, yet we accept it as true. Another example of "doublethink"...
Or is it the other way around? Either way, how do we know this? (I read somewhere that Einstein taught that they existed within the universe, but how he came up with this idea, that's the question.)
I'm new to the physics forums so correct me if I'm in the wrong place. We started a new unit on universal gravitation in my physics class, and I'm not sure I understand the following passage from the beginning of the chapter:
"Albert Einstein made the amazing discovery that gravity arises...