Recent content by robcowlam

Ah yes I see it now, I wasn't evaluating the integral, thanks for your help.

HI guys, Im having some trouble with a dynamics question, I am only looking at a worked example however I can't see where the final answer comes from. The problem is sample 3/5 on http://www.eng.auburn.edu/~marghitu/MECH2110/Dynamics/D2_1_examples.pdf I follow the working until the line...

Hi guys, Im having some trouble with a question about 3 phase power system. I have a balanced delta connected load of 30+18.86j ohms. The voltage is given as 400v @Hz and I am asked to calculate the phase voltage and current using the voltage Vr as the reference. Now from my knowledge of 3...

Spot on buddy, hopefully you understand partial derivatives now if not try reading: http://tutorial.math.lamar.edu/Classes/CalcIII/PartialDerivsIntro.aspx its a really useful maths website.

Got it! I was overcomplicating it by obtaining an expression for t instead of usin(theta)! Thanks for your help!

So is the question just asking you to find Fx, Fy, Fz? If that is the case then its a fairly easy problem. If you have not met partial differentiation before I won't go through what it is and how it comes about but i'll just tell you how to do it: To differentiate du/dx (with curly d's to...

ok I see what you're saying, I've had another go and I've got 3 equations and 3 unknowns but I can't seem to solve them simultaneously. My 3 equations are: 2=U.t.Cos(theta) 1.06=U.t.Sin(theta)-4.905t^2 0=USin(theta)-9.81t Ive tried to rearrange each equation and substitute them into each...

Ok you're not far off with what you have got: Assume the coil is square, this gives an area of 0.0001[m^2] Now from equation 2 you said flux = B.A as the coil is rotating the area of the coil which is perpendicular to the magnetic flux is actually given by flux=BACos(ωt). and from 1 emf =...

I am trying to calculate the initial velocity, u and angle of projection(theta) of a projectile. The projectile is fired from 1.06m above the ground and from this point reaches a maximum of 2.12m from the ground. The distance traveled in the x-direction when the projectile reaches its maximum...