1. Flashback Calculate the angular speed of ωs = 0.105 rad/s
the second hand on an analog clock
the minute hand on an analog clock
the hour hand on an analog clock
(ω = Δθ/Δt)
ωs = rad/s
ωm = rad/s
ωh = rad/s

2. Symbols & Units Quiz on 2-3-2010
Circular Motion
Physics
Dave McCallister

3. Symbol for time t

4. Unit for time
second (s)

5. Symbol for distance d

6. Unit for distance
meter (m)

7. Symbol for speed v

8. Unit for speed
meters per second
(m/s)

9. Symbol for acceleration

10. Unit for acceleration
meters per second2
(m/s2)

11. Symbol for force F

12. Unit for force
newtons (N)

13. Symbol for mass m

14. Unit for mass
kilogram (kg)

15. Symbol for work W

16. Symbol for kinetic energyKE

17. Symbol for
potential energy PE

18. Unit for work & energy
joule (J)

19. Symbol for power P

20. Unit for power
watt (W)

21. Symbol for
angular displacement Δθ

22. Unit for
angular displacement
radians (rad)

23. Symbol for
arc length s

24. Unit for
arc length
meters (m)

25. Symbol for
distance from axis
(radius) r

26. Unit for
distance from axis
(radius)
meters

27. Symbol for
angular speed ω

28. Unit for
angular speed
radians/second (rad/s)

29. Symbol for
angular acceleration α

30. Unit for
angular acceleration
radians per second2
rad/s2

31. tangential acceleration
Symbol for
tangential acceleration aT

32. tangential acceleration
Units for
tangential acceleration
meters per second2
(m/s2)

33. centripetal acceleration
Symbol for
centripetal acceleration aC

34. centripetal acceleration
Units for
centripetal acceleration
meters per second2
(m/s2)

35. Symbol for
centripetal force FC

36. Unit for
centripetal force
newtons (N)

37. Symbol for
gravitational force Fg

38. Unit for
gravitational force
newtons (N)

39. Front matter
The following slide shows what circular motion formulas will be given to you on Thursday’s circular motion quiz.

40. Formulas:
θ(rad) = (π / 180°) x θ(degrees)
Δθ = Δs/r
ωavg = Δθ/ Δt
αavg = Δω/ Δt
Δθ = ωI + ½ α t2
ωF = ωI + α t
ωF 2 = ωI 2+ 2α Δθ
Δθ = ½ (ωF + ωI) t
vT = rω
aT = rα
ac = vT2/r
ac = rω
Fc = mvt2/r
Fc = mrω2
Fg = G m1m2 / r2
Constants:
G = 6.673x10-11 N m2/kg2