Actually, that was probably the best advice I could have got. Silly as it sounds, I managed to completely overlook that formula as I was writing my lecture notes.
Thanks for the advice.
This is probably child's play for most of you, but a guy like me struggles to understand basic concepts. A kick in the pants to set me off in the right direction would be greatly appreciated.
Homework Statement
How far must the point charges q_1 = 7.60 microCoulombs and q_2 = -24.0...
Relax, man. It's just for extra credit. I'll get points for it whether I'm right or not just for the attempt and showing my work.
Besides, you can't possibly know if I'm drawing my free body diagrams correctly unless you've seen them.
Or you're psychic.
Edit: My answer ended up being 26.4 N...
SystemTheory pointed me in the right direction.
Thanks for trying to help, Jay, but I was talking about tomatoes and you were talking about potatoes. No worries. No harm, no foul.
Let's just sweep this thread under the rug and pretend like it never happened.
Mass A is 20/9.81
2.03 kg.
Mass, lump, piece of matter, chunk, block.
I wasn't saying that the mass was 20N. I was identifying it as a mass.
Are you trying to help me or insult me?
Thanks. That's exactly what I was looking for.
Can't really know tension until I'm absolutely sure of Force C.
Here's a clip from the highlight reel.
This is the only thing keeping me from finishing the problem.
I'm not sure which calculation is the correct one.
Tension isn't the part I'm having trouble with. Also, pretty well aware of the difference between weight and mass.
ninja edit: don't have a scanner. *shrug*
Got a classic textbook physics problem here. Pretty sure I got it, but again, just wanting a "yay" or "nay" regarding if I'm doing it correctly.
And there's one little thing I'm not exactly sure of.
Homework Statement
http://img189.imageshack.us/img189/2345/picture3pft.png
Two blocks, A and...
Are we married to the idea of kinetic friction, though?
Like... a car's tires rely on static friction to propel itself forward, to come to a stop (when using anti-lock brakes), to turn (etc) all without slipping or skidding. Kinetic friction comes from sliding, right? But the ball is rolling...
Are you sure the moment of inertia for a solid sphere is 2/3?
I thought that was for a hollow sphere.
Try 2/5?
http://img80.imageshack.us/img80/5226/picture2hr.png
Well, finals are coming around. I'm reviewing stuff I thought I learned at the beginning of the semester only to find out that I don't remember what I'm doing. It's pretty easy until I forget everything.
I think I have a handle on this, but I just want some verification to make sure I'm doing...
Well... For part B, if it's moving at a constant velocity (as opposed to a constant acceleration), shouldn't make a difference, right?
I mean, if something is moving at a constant velocity, then that means there are no net forces acting on it. And that would mean that the only force actually...
Currently trying to sort this kinda' stuff out myself.
I don't really know how to explain it, but I think that the point at which the particle has the greatest speed will be the part at which it is neither accelerating or decelerating.
Unless I'm totally wrong.