1. Force of Elevator on Person
Created for CVCA Physics By
Dick Heckathorn
20 October 2K + 4

2. Elevator at rest. m = 50 kg Fscale on girl = 490 N a = 0 m/s2 Fnet = 0
Fearth on girl
= 490 N
= m . g
Fscale on girl
= 490 N

3. Elevator up, accelerating up
Fa = 150 N
m = 50 kg
Fscale on girl
= 490 N
a = 3 m/s2
Fa = 150 N
Fearth on girl
= 490 N
Fscale on girl
= 490 N
+ 150 N
= 640 N

4. Elevator up, constant speed
m = 50 kg
Fscale on girl
= 490 N
a = 0 m/s2
Fnet = 0
Fearth on girl
= 490 N
Fscale on girl
= 490 N

5. Elevator up, slowing down
Fscale on girl
= 490 N
m = 50 kg
a = 3 m/s2
Fa = 150 N
Fearth on girl
= 490 N
Fa = 150 N
Fscale on girl
= 490 N
- 150 N
= 340 N

6. Elevator at rest. m = 50 kg Fscale on girl = 490 N a = 0 m/s2 Fnet = 0
Fearth on girl
= 490 N
Fscale on girl
= 490 N

7. Elevator down, accelerating down
Fscale on girl
= 490 N
m = 50 kg
a = 3 m/s2
Fa = 150 N
Fearth on girl
= 490 N
Fa = 150 N
Fscale on girl
= 490 N
- 150 N
= 340 N

8. Elevator down, constant speed
m = 50 kg
Fscale on girl
= 490 N
a = 0 m/s2
Fnet = 0
Fearth on girl
= 490 N
Fscale on girl
= 490 N

9. Elevator down, slowing down
Fa = 150 N
m = 50 kg
Fscale on girl
= 490 N
a = 3 m/s2
Fa = 150 N
Fearth on girl
= 490 N
Fscale on girl
= 490 N
+ 150 N
= 640 N

10. Elevator at rest. m = 50 kg Fscale on girl = 490 N a = 0 m/s2 Fnet = 0
Fearth on girl
= 490 N
Fscale on girl
= 490 N

11. Cable cut Fscale on girl = 490 N m = 50 kg a = 9.8 m/s2 Fa = 490 N
Fearth on girl
= 490 N
Fa = 490 N
Fscale on girl
= 0 N
= 490 N
Weight girl =
- 490 N
490 N

12. That’s all folks!