Recent content by mreznicek

Thanks arildno!-Migs

HallsofIvy and Astronuc: Thanks again for the info. With your last two posts the question becomes again a problem for me since the elasticity of the table becomes an relatively unknown factor. Are there any "rules of thumb used in cases like this? (Sort of like Astronuc's approximation...

OK Astronuk, I understand your thinking. What I don't understand is how you get to the force F if you don't know anything about the time. (Or is the time the time it takes from release above the table to stop? If so, the closer the the book is to the table then time tends towards zero...

Good to know Eddie. I'm making a small 10x10cm robot vehicle and wanted to isolate the compass sensor from the electronics and motors. Another option will be to put the sensor on a small mast. -Migs

hmmmm... What about the impulse?

There you go! Which again makes it a bit nebulous to really know the velocity... Thanks for the words amigos. -Migs

Thanks for the comments amigos! I kinda figured this was the case. I'ts always nice to have people in the know tell you exactly how it is ;) Migs

a=~0, thus F=0, and this aint possible!

Hi Genneth: So what is a common household superconductor with which I could shield say my compass as it sits on the dash of my car so that the dash electronics don't affect it? Migs

Guys: Ok, so at what point does a particle simply "explode" the target rather than simply pass though it. It's hard for me to express what I'm thinking because there clearly seems to be a transition between the particle collisions we learned about in college physics and the phenomena described...

Friends: I understand that collisions at high speeds cause a lot more damage. Like when micro meteors strike satellites. Can someone explain how this physics differs from normal collisions? At what velocity do these effects become enlarged? I read about an electromagnetic gun whose...

Friends: Can a magnetic field be shielded somehow by a passive material? i.e. can I wrap a strong magnet in some thin material and impede the B field outside? Thanks amigos! -MigsP.S. This is not a homework question! I finished M.E. a long time ago!

Friends: Let's say a 1 kg. mass is droped a negligible distance above a table. What is the maximum force exerted on the table? What would the force be if the object were dropped L meters above the table? Thanks amigos! -MigsP.S. This is not a homework question! I finished M.E. a long time ago!