Recent content by julz127

Thanks but I think my question is more about how to rotate it, my (poor) understanding of the question is that I apply some sort of rotation transform to get the second equation, or is the second equation the actual transform? It's actually part of a larger question involving integrating the...

Homework Statement using a rotation transform, show that the plane z = b - y can be transformed to the horizontal plane \widehat{z} = \frac {b} {\sqrt{b^2 + c^2}} Homework Equations ^ The Attempt at a Solution I just need some help understanding the question, if I could get a...

Homework Statement rate of change of f(x,y) = \frac{x}{(1+y)} in the direction (i-j) at the point (0,0) Homework Equations The Attempt at a Solution ∇f(x,y) = \frac{1}{(y+1)}\hat{i} - \frac{x}{(y+1)^2}\hat{j} D_u = ( f_x, f_y) \bullet ( 1, -1 ) D_u =...

Thanks for the reply, however I managed to solve the circuit just a few minutes after I posted it. I realized that I've been looking at this whole mesh analyses technique the wrong way. A huge 'lightbulb' moment. Feels good man. :biggrin:

Homework Statement [PLAIN]http://img718.imageshack.us/img718/3519/circuith.png This is a circuit I've simulated in pSpice, I can't get the currents to match up with my hand calculations using mesh analyses. Specifically, I'm not entirely sure how to handle the current source...

In my limited experience working with micro controllers, usually they have a delay() or delayms() function in their library. So suppose you wanted a robot to drive forward for 5 seconds, you'd set the current to the motor 'high' then delay(5). The actual wait is done by loops, google "assembly...

Oh dammit. :P Do you know how long I spent on this question, before giving up and clicking "show answer"? Thanks anyway. At least I can do it now.

Yes, it should wait. Otherwise it will be continually trying to turn right.

so if I am interpreting this correctly, right() causes the robot to turn right. DelaySpeed() then tells the robot to wait before making the next turn? Also, you may want to look into using a 'for' loop. (You may already know this) It's like this: for(int n = 0; n < 5; n++) { }...

Yeah, last equation should have been: F_{JK} \times \frac {a} {\cos(30)} = (F_{GIy} \times 2a) + (F_{GIx} \times 2a\tan(30)

Homework Statement Find the force acting at pin E [PLAIN]http://img841.imageshack.us/img841/4983/piczt.png a = 53.0 mm, b = 212 mm, c = 318 mm, d = 106 mm, and e = 371 mm. A mass of 515kg acts through H. Homework Equations The Attempt at a Solution By finding the moment...

Yeah so y(0) is the height of the lowest point? In the OP is said the lowest point is at x = 0, I'm Having trouble understanding the wording of the question. I think the answer is Height = H/Pg, since cosh(0) = 1. But I'm not sure if that's "In terms of the constants"

Homework Statement "Expressed in terms of the constants in this model, how high is the lowest point of the cable? (Assume the correct dimension to be in metres)"Homework Equations Equation for the shape of a hanging cable. [PLAIN]http://img59.imageshack.us/img59/8672/eqn6142.png edit: P, g...