Recent content by someone1

Does this make more sense? For part a: I1W1 = I2W2 ... which equals... m(r1^2)w1= m(r2^2)w2... and then the m's cancel.. and you solve for w2... so... w2= w1(r1^2/r2^2)... which is 1(2^2/1^2) = 4

we kinda used our logic to figure these out, but we're not sure about the answers... here's what we have: a) w= v/r v=rw v = 2(1) v = 2m/s w=v/r w=2/1 w=2m/s w=2rad/sec b)ac = v^2/r = 4/1 4m/s^2 i'm not sure if that's right or not, can some verify that for me?

I've been trying to use that formula for hours now and I'm not sure if its the right formula to use. It doesn't even seem to apply to this problem :/ Any other ideas?

AM of the disc? what does that mean? (I think maybe i need the lamnest terms for all of this... or even be babied through it all... but i have done rotational problems of more basic caliber)

Thanks for the speedy reply, but can you give an explanation for what each variable is? I think we may be misreading the formula :/ L is angular momentum, correct? r is radius (in this case 1m)? m would be Mass? but of what, the disk or squirrel? unsure as to what Iw and w are. also...

Hey, i have this big packet filled with questions i don't know the answers to, but me and my friends have been able to knock out all but three, so i figured i'd ask the brilliant minds that make up this great community for help ;) A hungry squirrel of negligible size (mass m= 2.0 kg) is...

If any1 is intereseted with the pacman thing, here's how i went about solving it: Assumptions made: Pacman has a diameter of 15cm, Pacman’s mouth opens at a 45-degree angle, Pacman’s positioned with his mouth starting on the horizontal opening upwards. Center of Mass of circle...

(1/3, 1, 1/3) and (1/3,0,1/3) are the center of masses for the two triangles... There must be some mix up in the formulas i am using (either incorrectly or leaving a part out) I feel the centroid is at (1/3,.5,1/3) but i have no1 to verify my claim... I'd like to think I'm good at physics, but...

that's funny... its 1:54 am over here... anyway... i don't know how to find the centroid... and the centroid of the pacman shape will be off cause of the missing chunk in its big idiot head... sooooo anybody know the formula for finding the centroid of a 3D object? another thought: Even if the...

While googling, i came across this from http://www.gaffer.org/game-physics/physics-in-3d/" : "The center of mass of the object is the weighted average of all points making up the body by their mass. For objects of uniform density, the center of mass is always the geometric center of the...

well... by five shapes i mean the five different faces i got the center points of... and with 2d figures, i can break down the figure into shapes, but i guess not with 3d... hmmm... but I'm still a little confused, would i multiply the volume of the half cube for each point? (as in...

hehehe, glad you enjoyed it! But I'm not so sure on all of that symmetry stuff, haven't really gone in depth with the subject and my textbook was written for high level physics courses in college (I'm only in High School); it's pretty much gibberish to me... If anything, did u find any problems...

Another Question While I'm at it, I've another question on this topic: Homework Statement My teacher gave us a cutout of a pacman shape. Its a circle with the mouth opening which has an angle of 45 degrees. I'll the diameter is about 5.9inches (it really doesn't matter, all i need help with...

Here Umm... I've used my "1337" (and i use that term EXTREMELY loosely) photoshop skillz to make this figure for you guys... I hope this helps! (Thank you! Glad to be here!)

Homework Statement Give the X, Y, and Z coordinates of the center of gravty of a half cubical block of uniform density. The diagram below shows how the block was cut. The diagram depicts a cube with sides of length 1 cut diagonally in half. the six vertices are as follows: (0,0,0) (1,0,0)...