Recent content by Want to learn

Ahh, i see. Yes I didn't think about the small distance at all. Great, thank you.

Homework Statement My question is. How would the acceleration vs. time graph look if an object was in free fall? I am referring here to the picket fence lab. The Attempt at a Solution My brain tells me, that it would be a horizontal line. But when I think about it, it doesn't...

I'm guessing your are talking about this part 784 x 1.2cos(x) ?? How would I find the correct lever arm?? Could you elaborate on the adding up part also? Sorry for asking such silly questions, but I just don't seem to understand.

Ladder Problem :( Homework Statement A 80 kg ladder is 3.00 m in length is placed against the wall ant an unknown angle. The center of gravity of the ladder is 1.2 m from the base of the ladder. The coefficient of friction between the base and the ladder is 0.400. No friction between the...

That is very true. Many people when they see that they are struggling end up dropping the course because it will affect their GPA. They are not willing to work at it and put in the hours to understand the material on a deeper level. It's all about staying competitive and get the most money...

I guess in the end it just comes down to practice and recognizing the different types of problems. What still frustrates me is the readings. When I read the text for the first time, after I am done, it feels like I have not read anything, and much of what I have read I forgot, so that is like a...

So I am in an intro college physics course, but it is not my cup of tea. The class goes like so, we get lectures, we get reading assignments, we get problem sets. And repeat that for every chapter. I have a problem with understanding the physics. Yes, that's a little vague, let me explain. I...

Ok the above doesn't make sense. Then I don't know, really.

Is it just 20 days the same as moon D? A line drawn from the sun to any planet sweeps out equal areas in equal time intervals. Does the size - radius matter then?

Homework Statement Two moons orbit a planet in nearly circular orbits. Moon D has orbital radius r, and moon E has orbital radius 4r. Moon D takes 20 days to complete one orbit. How long does it take for moon E to complete one orbit Homework Equations None - I think The Attempt...

WOW I was making such a silly mistake. I was doing what I said above - using Kepler's third law - but when I solved for r I just used r as my answer. Which was not correct at all. I needed to subtract The r I got from Kepler's law from the radius of the Earth to get my distance. Such a...

Kepler's law T^2 = [ (4pi^2) / (GM_E) ] r^3 I would solve for r then? but I am not sure if that gives me the distance TO the satellite.

Yes, I kind of figured that since there was no other quantity given for time, but I still don't see or understand how we would find the radius - the height of the satellite above the earth.

Homework Statement A 10,000 kg satellite is rbiting the Earth in a geostationary orbit. The height of the satellite above the surface of the Earth is ? Homework Equations V = \omega r Newtons gravitational force equation Keplers third law equation The Attempt at a...

well there is this one: \Delta x = V_0_x t + (1/2) (a_x) t^2 but a in the horizontal direction = 0 in this case. So I am back to where I started. I am trying to find, where the object is going to end up after 3.00 seconds. I need the distance traveled in 3 seconds. And then I...