Recent content by forcefrom

Did you use Vorb = sqrt(GM/r) for the velocity? Are you referring to this system of equations? Et = -Gmm/r v^2/r = 4pi^2r/T^2 Isn't period an unknown too?

Vorb = 7907m/s, which is more than, Vgiven = 2500m/s. So it does not have enough velocity to orbit the Earth, is this right? But what if the question asked for maximum altitude?

So how exactly would you go towards solving it?

If we hypothetically assume it was asking for max altitude, would Ek final be zero then like in my solution?

I believe they are asking me how far (max altitude) it will go away from Earth's center for the first question, which in that case I assume it will fall back down. And thanks. I understand what they mean now for the second question.

Homework Statement 1.A rocket at the surface of the Earth is launched with a speed of 2500m/s. What is the orbit that the rocket will achieve? 2.A meteorite traveling at 3500m/s approaches Earth from outer space. With what speed will the meteorite hit the surface of Earth? 3.Also, in...

Do I need a sketch (to know visualize/see the diagram of the problem) to find the C.M.? I'm not sure how to find it.

Oh, so the r in Fc is different. Center of revolution means I need to know my center of mass, right? Another problem I'm having is I'm not sure exactly how the sketch for this works, if that's needed at all?

Homework Statement A certain binary star system consists of two stars of masses m and 3m respectively separated by a distance of 1.5 * 10^12 m measured between their centres. These stars revolve in sync with each other around their common centre of mass. If the smaller star has a mass of 1.0 *...

Alright, so I have this sheet for homework and I'm not sure where to start. Incase you are unable to see, the questions say: a) What is the acceleration of the system and the tension in each rope if the girl lifts with a force of 100.0N? b) What is the force that she pulls with if T3...