Slides for teaching normal force on horizontal and inclined planes.

1. Force
Normal

4. Weight

5. Weight

6. Normal
Weight

7. Normal
Weight

8. N
W

9. inclined plane

10. W

11. x
y

12. W’s
component
into surface
W

13. W’s
component
into surface
W

14. Wy
W

15. N
Wy
W

16. N
Wy
W

17. N
Wy
W

19. N
Wy
W

20. N
Wy
W

21. 30°

22. N
Wy
30°
W

23. N
Wy
30°
W
Wy = W • cos 30°

24. N
Wy
30°
W = 520 N
Wy = W • cos 30°

25. N
Wy
30°
W = 520 N
Wy = 520 N • cos 30°

26. N
Wy
30°
W = 520 N
Wy = 520 N • cos 30°
= 450 N into the slope

27. N
450 N
30°
W = 520 N

28. 450 N
450 N
30°
W = 520 N