Recent content by kaikalii

So, assume a system of two solid, spherical masses in a vacuum. Sphere A has a mass of 10 kg, and Sphere B has negligible mass in comparison. The centers of the two spheres are 10 meters apart. For the sake of simplicity, let's say that in this universe, the gravity constant, G, is 1 N*m2/kg2...

Thank you! This is exactly what I was looking for.

I know that for short distances from the Earth's surface, x=-1/2gt^2+vt+x works fine for finding the time it takes for an object to fall a certain distance ignoring air resistance. However, what if the distance is many times the Earth's radius? The only thing I can think of to start solving...

*uniform

But wouldn't large amounts of non-uniform acceleration still have certain effects? I'm pretty sure a human would not be doing too well in a rocket accelerating at 980 m/s^2. But are you saying that the rocket itself would be fine structurally, as it's acceleration is uniform?

What happens to objects (of any material, density, mass, etc) at both the macroscopic and atomic scales when under the effects of very high accelerations, say, 100 g's? 1000 g's? 1000000?

But in his frame of reference, isn't the entire station stationary, and therefore there would be no centrifugal force accelerating him?

Perhaps I should revise my question to something far simpler. If there is a ring-shaped space station that is spinning relative to Earth, but is stationary relative to a person standing on the inner surface, what kind of acceleration does the person experience?

A common solution to the problem of artificial gravity in space is to have the spaceship or station rotate, and the centrifugal force would "pull" objects toward the outside. What I haven't seen considered is that the station would have to have some kind of central motor attached to a central...

I see. It would seem that I do not know enough of the math behind things to make some of the assumptions I have made.

I wanted to make a thread to discuss the possible physical implications of a 2D universe as opposed to our 3D one. Note this is meant to be purely to be a thought experiment rather than a true analysis of something real. Also note that when I say 2D and 3D, I am referring to the number of...

I could be wrong on this, but I'm pretty sure that like photons, gravitons, the hypothetical particles that carry the force of gravity, travel at the speed of light in all frames of reference. I think it's just like if you were to shine a flashlight behind a car going 25 m/s, the photons would...

In a free-fall problem, 9.8 m/s^2 works fine as long as you stay close to the earth. However, if you are falling from very high up, the change in acceleration due to gravity is no longer negligible. Let's say there's an atmosphereless planet of mass M, and another object of negligible mass is...

Is there a way to calculate the magnetic field strength, B, of a magnet (permanent magnet, not an electromagnet) at a certain distance? I assume it follows the inverse square law, but other than that, I do not know what to do. Tools I have available: permanent magnet ammeter/voltmeter...

I made up a scenario: Let's say I have a rocket at rest in space. The rocket initially weighs 100 kg, 50 kg of which is fuel. If the fuel burns at a constant rate of 1 kg/s and produces a thrust of 100 N out the back of the rocket, what will the rocket's velocity be after it runs out of fuel...