Sorry, I think I got part B wrong. You can't do it using energy because it gives you velocity squared (and you can't derive that to get acceleration).
Instead, I just summed to torques (which made it a lot easier).
Its just torque due to tension = I*(alpha)
And because the force of...
Homework Statement
A cloth tape is wound around the outside of a uniform solid cylnder (mass M, radius R) and fastened to the ceiling. The cylinder is held with the tape vertical and then released from rest. As the cylinder descends, it unwinds from the tape without slipping. The moment of...
Another question about this problem. I found the first part, but I'm sort of confused about the 2nd question. I don't think its a trick question, but it seems really, really easy.
Basically, it says given a distance and both accelerations (and the fact that everything starts at rest), find...
Homework Statement
Its not a very difficult problem, and I really only need to know 1 thing about friction; anyways, here's the summed up problem:
(my teacher enjoys making us use constants instead of numbers btw)
A horizontal force F is applied to a small block (mass m1), and it slides...
As a side note/funny little story, our physics teacher claimed that he DREAMED of this lab; he wanted to show us that with a ruler and a little brainwork you can solve for anything.
He also said that our final would be to find the air pressure of the room with only a ruler, a compass, and a...
Homework Statement
Okay, this lab has had me stumped for the last few hours. This is our first lab for AP Physics BC.
Problem: Determine the position vector that describes the locatino of the water that is launched by a drinking fountain. Your position vector needs to be in unit vector...