Final answer:
The gravitational force on a satellite increases and its orbital speed also increases when it moves to a smaller circular orbit closer to Earth.
Step-by-step explanation:
When a satellite is moved to a new circular orbit of a smaller radius, the gravitational force it experiences increases due to it being closer to Earth. This is because gravity is inversely proportional to the square of the distance between the satellite and the Earth's center. As for the satellite's speed in orbit, it must increase for the satellite to maintain circular motion against the stronger gravitational pull.
This increased speed comes from the need to have a greater centripetal force to counteract the gravity at the smaller radius. Therefore, in comparison to a larger orbit, a satellite in a smaller orbit has a higher gravitational force acting on it and travels at a greater speed.