I guess my question could be written a bit more simply as: by "two sections of equal mass that then move with a relative speed (relative to each other) of 2.80 x 10^3 m/s along the original line of motion" does it mean that piece 1 is traveling at 2.80 x 10^3 m/s in relation to piece 2 (which...
Conservation of momentum, of course. I swear that's that I meant to say :-p
Wait, so then it's saying that one piece gets blown higher up and the other piece gets blown down (in relation to the original trajectory)? Wouldn't they then not be traveling "2.80 x 10^3 m/s along the original line of...
Homework Statement
A 900-kg two-stage rocket is traveling at a speed of 6.50 x 10^3 m/s away from Earth when a predesigned explosion separates the rocket into two sections of equal mass that then move with a relative speed (relative to each other) of 2.80 x 10^3 m/s along the original line of...
Haha, I'm so glad to have finally reached the answer, but I'm even happier that I (now) understand it, as well. Seems so much simpler written out like that, if only my book would do the same!
Thanks a lot to everyone (especially you Doc Al) for all the help!
I get what you're saying here, but I'm not quite so sure I'm going to get this right, my thinking on this is becoming more and more confusing by the second, but if it's acting towards the center, then it would be (I hope): mgcos(theta) - N = mv^2 / r
This would then give me an answer of...
I don't think I quite understand what you mean by radial direction. I'm sorry, I don't mean to be difficult. :frown:
edit: If you mean the direction that the radius points in at this point (by which I mean using the radius as the y-axis on my FBD), then I get mgcos(theta) + N = mv^2 / r ...
Ah so I was right (or at least close earlier) sorry for deleting the post - I thought I was way off before!
So, (and correct me if I'm wrong here, I've never had a physics course before and I'm afraid I'm dreadfully bad at it), the net force would be the sum of the two forces, gravity and the...
Alright so I've done a bit of work and I think I'm almost there, let me explain what I've done and where I'm now stuck.
First of all:
http://img509.imageshack.us/img509/5949/sphere2lm8.png
I note that the height at the top of the sphere is 2r
I use this figure to find that the height when the...
Hello, I'm new here so please let me know if I do something wrong.
1. Problem 1
1. A skier of mass M starts from rest at the top of a solid sphere of radius R and slides down its frictionless surface. At what angle will the skier leave the sphere...