* Orbital speed is determined by the distance from the Earth and the Earth's gravity. The further away an object is, the slower it needs to travel to stay in orbit.
* Mass only influences the gravitational force an object exerts. A heavier object will have a stronger gravitational pull, but this won't directly change its orbital speed.
Here's a simplified explanation:
Imagine two objects in orbit: a tiny pebble and a massive satellite. They are at the same distance from Earth. Even though the satellite has much more mass, both objects will orbit at the same speed because they are experiencing the same gravitational pull at that distance.
However, mass can indirectly affect orbital speed over time:
* Atmospheric drag: While space is mostly a vacuum, there is still some trace of atmosphere at lower altitudes. Objects with larger surface areas or irregular shapes experience more drag. This can slow down their orbital speed and eventually cause them to fall back to Earth. The heavier an object is, the more atmospheric drag it will experience.
* Collisions: If two pieces of space junk collide, the resulting debris might have a different combined mass and momentum, which could change their orbital speeds.
In summary:
* Weight doesn't directly influence orbital speed.
* Orbital speed is primarily determined by distance from Earth and gravity.
* Weight can indirectly affect orbital speed through atmospheric drag and collisions.
