Recent content by twofish

Actually.. i didn't articulate that very well i suppose. But you're right, if I just solved for the distance ball #2 traveled and deducted that figure from 3m it should tell me the spread between them and hence h (or x).

ok. Well I think I have a solution then, but it's not very fancy (I just used techniques from high school physics). 1) I first contemplate ball #1 to find the final velocity and the time it is at 3m. Vf2=Vi2+2ax Vf2= 02+2(9.81)(3) Vf=7.67m/s Now the time: x=( (Vf+Vi)/2)t ; 3m=((7.67+0)/2)t...

Homework Statement http://members.shaw.ca/code/balls.JPG" Homework Equations I'm not sure what equations to use here, or even wether or not I need to use calc. Unfortunately we just started dynamics and most students don't know how to integrate yet (including me) v = dx/dt a =...

Homework Statement http://members.shaw.ca/code/statics.bmp Homework Equations The Attempt at a Solution I'm having a tough time getting started with this one. Obviously W= 196.2N and AD = 0.425m Do I need to do a force-couple system? Thanks much! Steven

Thanks learningphysics and CompuChip, I think I've done it correctly (I hope). Can you let me know if the methodology is correcT? I rotated my FBD, the diagram in the text by 30 degrees clockwise. I like it this way because it gives us some special angles to get easy values for (for...

Ok, I am doing this completely wrong if it is impossible for both tensions to be 270N at the same time. Can you tell me why? Is it because they have different angles, and therefore regardless of the tension on P or Q it will never be "evenly distributed" over both cables?

Does Q have to be downward? I don't see why it does, gravity does not come into play. I just rotated that picture above and my FBD 30 degrees clockwise. That made all relevant angles( of vectors) 90 degrees with the exception of Q which was 240 degrees. Just a rotation.

I thought that I had to assume the tension in the cables, otherwise how would I solve for the parameters given, ie: "range of values of Q which the tension will not exceed 270 in either cable." Do you not solve by setting each tension to max (270 N) and then solving for Q... let's say I get...

Homework Statement http://members.shaw.ca/code/2.133.JPG Two Cables tied together at C are loaded as shown. Determine the range of values of Q for which the tension will not exceed 270N in either cable. Solve graphically and Numerically. Homework Equations law of cos, law of sine...

of course.. how silly of me, I was trying to make a triangle and use law of cosines.. thanks much!

Well the last resultant at a magnitude of 821N had 50.0007N (X-component) and 819.181N (Y component). Direction was 86.5 degrees N of E Now I need to add a Force such the new resultant will be 750N and vertical (or 90 degrees). I guess what I am saying is, I don't know how to get the X or Y...

Homework Statement First of all I will have to apologize if this in in the wrong forum. It is a 1st year engineering mechanics problem. I am having an issue solving a secondary part of a question. The first part of the question has asked me to both graphically and numerically determine a...

Yes, the question is as stated (ie; there are no components given). I'm leaning towards something similar to letting AB= b-a then P= (1/3) (b-a) ?

[FONT="Courier New"] Homework Statement Below is the question given. "Give a vector description of a point P that is on-third of the way from A to B on the line segment AB." 2. The attempt at a solution I'm not sure where to go with this, all I really have at this point is a line A-B 6...

! You're exactly right ..I was thinking that 7600 was 4 signifigant digits and 120 was 3 etc, forgetting that 0's to the right of the whole number are ambigious. Thanks so much Grogs!