Recent content by caddyguy109

I know how easy it should be, which just shows how bad my trig knowledge is. For the first one, should it be: tan(theta)=h/d and then h=d*tan(theta)?

SO simple, yet I'm still SO confused...any pointers in the right direction? I've done a couple of other mechanism problems with 2 arms going to a point, and start out by breaking it apart a bit, and defining er and el (if that makes sense), with i and j. But the layout of these two is...

It's obviously been a while since I've worked some of these problems, and I thought I got it, but then something is tripping me up on each of these: 1) Rocket is fired vertically and tracked by radar--obtain an expression that relates the altitude and the horizontal distance between it and...

Okay, THINK I got it.

:rolleyes: ...this problem really must be confusing. Seems to be the one all of us in the class are getting stuck on right now.

This problem is REALLY driving me nuts...:mad:

Anyone??

This problem was part of a post in another thread, but it got really messy over there and no one seems to be responding. So, here's the problem: http://www.ihostphotos.com/show.php?id=182816" And I was told this (but it didn't really help me see what to do, much): "at least it's a 90 degree...

Okay, got it--thanks!

And that would still end up as "a" as a function of the other terms? Hmm...going back to my math skills from many years ago...

Okay, my last plead...:rolleyes: ... Can anyone help me figure out #2: 2) http://www.ihostphotos.com/show.php?id=182816 This was said here: "at least it's a 90 degree angle! and frictionless ... try taking Moments around the place where the two F_N intersect did you sum F_x and F_z...

Hmm...after multiplying through by sqrt(a^2 + 4r^2), I got: [2PLr - Nb(a^2 + 4r^2) + WLa/2 = 0 then I multiplied through by 2 to get rid of the division by 2 in the last term, and got: [4PLr - 2Nb(a^2 + 4r^2) + WLa = 0 But how do I apply that to the quadratic formula, if I want to...

Anybody? It's just algebra, but good lord is it confusing me!

In the middle of a statics problem full of unknowns, and am trying to simplify a sum of moments down to the point where I have: a= everything else (a as a function of several other terms). Keep getting close, but then always have an extra variable or two that won't go anywhere. Here's the...

Anybody?:frown: