sam2k2002 said:I'm not sure how to do that.. I get:
U_g(10km) = -2.67*10^17
U_g(100km) = -2.67*10^16
the difference is only 26.7J... that can't be right.
sam2k2002 said:How do I calculate the orbital speed?
I assume after I get that, i can compute the change in kinetic energy?
sam2k2002 said:so g=v^2/r ?
An object in orbit around Earth is any object that is moving around the Earth in a continuous circular or elliptical path due to the Earth's gravitational pull. This includes natural satellites such as the moon, as well as human-made satellites and spacecraft.
An object stays in orbit around Earth because of the balance between the Earth's gravitational pull and the object's forward motion. The object's speed and distance from the Earth must be just right for it to continue orbiting without falling back to Earth or flying off into space.
The main factors that affect an object's orbit around Earth are its speed, distance from Earth, and the mass of the Earth. Objects with higher speeds and farther distances from Earth will have larger orbits, while objects with lower speeds and closer distances will have smaller orbits. The mass of the Earth also plays a role in determining an object's orbit, as it affects the strength of the gravitational force.
Yes, an object's orbit around Earth can change due to different factors such as atmospheric drag, gravitational influences from other celestial bodies, or propulsion from a spacecraft. These changes can cause an object to move into a higher or lower orbit, or even leave Earth's orbit entirely.
Scientists track objects in orbit around Earth using various methods, such as radar, telescopes, and satellite tracking systems. These systems can monitor an object's position, speed, and trajectory to predict its future orbit and potential collisions with other objects in space.