55. What is the gravity of moon as compared to the Earth A.1/4 th of Earth B.1/5 th of Earth C.1/6 th of Earth D.1/8 th of Earth
Option C Solution: The Moon's surface gravity is about 1/6th as powerful or about 1.6 meters per second. The Moon's surface gravity is weaker because it is far less massive than Earth. A body's surface gravity is proportional to its mass, but inversely proportional to the square of its radius.