Assertion: A person sitting in an artificial satellite revolving around the earth feels weightless.
Reason: There is no gravitational force on the satellite.

Explanation

In an artificial satellite, let g' be the acceleration due to gravity of earth and `a` be the acceleration of the satellite. The apparent weight of body on satellite is , `W_(app) = m(g' - a)`, since, satellite is a frelly falling body, hence `a = g'`, so `W_(app) = m(g' - g') = 0`.
On the moon surafce, the acceleration is mainly due to gravity of moon, whose value is about `1//6th` to that on the surafce of earth. So the weight of the body on the surafce of moon becomes `1//6 th` that of earth and naver becomes zero.