A communication satellite is launched with an initial mass (including fuel) of 2500kg. After burning 500kg of fuel, it settles into a circular orbit 800km above Earth’s surface. Take RE=6400km and g=9.8ms−2 on the surface.
(i) Calculate the weight of the satellite in its final orbit.
(ii) Find the percentage change in weight of the satellite relative to its initial weight on the launch pad, accounting for both altitude and mass change.