| Case 1 : Lift is moving upward with an acceleration 'a' | Case 2 : Lift is moving downward with an acceleration 'a' | Case 3 : Lift is at rest | Case 4 :Lift is falling down freely |
R - w = Fnet = ma
R = w + ma
R = mg +ma
R = m (g + a) | W -R = Fnet = ma
R = W - ma
R = mg - ma
R = m (g - a) | Here, the acceleration is zero
a = 0
R = W
R = mg | Here, the acceleration is equal to g
a = g
R = m(g - g) |
| R >W | R <W | R = W | R = 0 |
| Apparent weight is greater then the actual weight. | Apparent weight is lesser than the actual weight. | Apparent weight is equal to the actual weight. | Apparent weight is equal to zero. |
