1. What would be the path of the Moon if somehow all gravitational forces on it vanished to zero?
2. Larry weighs 300 N at the surface of Earth. What is the weight of Earth in the gravitational field of Larry?
3. Why do the passengers in high- altitude jet planes feel the sensation of weight while passengers in an orbiting space vehicle, such as a space shuttle, do not?
4. If the mass of Earth increased, your weight would correspondingly increase. But, if the mass of the Sun increased, your weight would not be affected at all. Why?
5. The value of g at erath's surface is about 9.8 m/s2. What is the value of g at a distance of earth's twice radius?