Recent content by LeFerret

Ah I see, thank you.

In general, when given something like, this how would I know which vectors to use for my cross product?

The only thing I can think of is a cross product of two vectors. If I defined two vectors from the origin to the coordinates (0,0,1) and (1,1,0) and crossed them, this would give me -i+j however the solution is sqrt(2)/2(-i+j) and I'm not sure where that common factor is coming from

Homework Statement Determine the Strain Rate for a Material Fiber in the direction of the surface normal. The Velocity Field is V=((4y-3x)i+(5x+3y)j) ft/s http://puu.sh/9hQ7Q/2bda80620f.jpg is the picture which describes a steady, planar flow where i and j are unit vectors. Homework...

Hmm, I'm not quite sure on this one, I would say no but don't take my word for it. What I would consider though is using the parallelogram law to create a force triangle. I can't really offer any tips on it, just draw A+B, then translate them accordingly to make the parallelogram.

Correct. From that you can find the angle F2 makes relative to the v-axis as well and from that you can determine the components of the force with respect to the u-v axis.

If I understand you correctly, you're saying that the angle F1 makes to the v-axis is 45degrees?

They defined the axis for you in this problem, and want you to find the components of the force relative to those axis. So what you can do is find the angle the force makes with respect to the u-v axis and use trig to find the components.

Figured out my mistake. Can't assume that the top rod contributes no field.

Homework Statement Two curved plastic rods, together form a circle of radius r. The top half of the circle is the first rod with charge -q, the bottom half of the circle is the other rod with charge q. Find the magnitude and direction of the electric field at point P, at the center of the...

I was not aware there was a pinned thread similar to this one already. I am going to read that, any suggestions/insight will still be appreciated though!

I'm sure these two have been compared before, but I'm wondering if anyone could grant me insight on what the Mechanical Engineering/Civil Engineering industry is like. I know Mechanical Engineering is much more broad, but how is the work on a day to day basis? What is the work on a day to day...

Thank you for the help!

Ah I see, so when computing normal acceleration at A, ρ is given to be 40meters from the curve, however since the center of mass of the car is .6meters from the surface, I would use VA2/40.6 correct?

but velocity increases uniformly, wouldn't that imply that the tangential acceleration is constant? and if tangential acceleration is constant, and the magnitude of acceleration at A and B are the same, then that must mean the normal acceleration at A and B are equal?