Recent content by PPERERA

According to this NASA factsheet (http://www.nasa.gov/pdf/664158main_sls_fs_master.pdf ) on the Space Launch System (SLS), NASA identifies missions to a Lagrange point as a possibility. From what I understand, a Lagrange point is simply a point where the gravitational fields of two massive...

Can someone please give a step by step explanation of an orbital rendezvous by a spacecraft for a target that is orbiting the body it launched from? And if possible, can you explain how mission control is involved and what part computers play? When the RCS is active is it changing the...

Thanks for the answer. But wouldn't producing thrust radially and perpendicular to the orbit still do work against the gravity of the object being orbited?

[Mentor's Note: Post merged from another thread.] In a previous question (https://www.physicsforums.com/threads/direction-of-burn-while-in-orbit.811953/), I learned that burning the engine radially relative to the object being orbited had the same effect as burning parallel to the tangent of...

I know that when a spacecraft is in orbit, the direction in which the spacecraft produces thrust affects its orbit. If the thrust is tangent to the orbit, the orbit's shape (eccentricity and size) changes. If the thrust is perpendicular to the orbit, but tangent to the surface of the...

A. For a uniform disk, I = (1/2)MR2. (But the Moment of Inertia can vary depending on the shape of the rigid object.) B. Use Newton's 2nd law to find the net force acting on the object. Then isolate the linear acceleration. There are 2 forces involved. You won't have a numerical solution. C...

-W = ΔU The negative of the work done on a system is also equal to the negative change in potential energy of the system. When an object is lifted to a new height, it gains potential energy because Earth does work against it through gravity to oppose its vertical displacement. (We say it gains...

If it is true that centripetal force must be present for an object to undergo circular motion, then what I asked is not possible. What I was trying to do was to see if there was a distinction between revolution (an object is in circular motion around another object that is not in circular...

Torque causes a system to rotate about its axis while centripetal force causes a system to rotate about the axis of the separate system that exerted the centripetal force. So does this mean that torque specifically causes rotation and centripetal force causes revolution?

Thanks for the response. I am that much more knowledgeable for it.

I recently learned about Magnetism in my high school Physics class, and it made me think of all the applications there are for it. I was especially interested in magnetic induction. I understand that it is dependent on magnetic flux or the movement of the conductor. I'm obviously not an...