1. Newton’s Law of Universal Gravitation 2/13/17
2/13 Earth’s Gravitational Field TB p read and take cornell notes and TB p 390 Essential Questions
TB p. 387 #1-5
2/14 Dyson Engineering
HW: TB p.391 #1-5
2/15 Dyson Design
HW: TB p.391 #6-10
2/16 Dyson Redesign
2/17 Quiz- Universal Law of Gravitation

2. Front of Class 2nd
door w i n d o s

3. Front of Class 3rd
door w i n d o s

4. Front of Class 7th
door w i n d o s

6. Date: 2/13 Goal: I can understand the changes in the earth’s gravitational field.
Bell Ringer: Describe the motion of the object below during the various time periods
0s to 2s
2s to 4s
4s to 6s

7. Acceleration due to gravity
Date: 2/10 Goal: I can analyze the earth’s gravitational field. Bell Ringer: Based on the graph below that you created, what is the relationship between the acceleration due to gravity and the distance from the center of the earth?
Acceleration due to gravity

10. Date: 2/10 Goal: I can understand the changes in the earth’s gravitational field.
Bell Ringer: Describe the motion of the object below during the various time periods
0s to 2s
2s to 4s
4s to 6s

11. Date: 2/10 Goal: I can analyze the factors affecting the gravitational force between two objects. Bell Ringer: A falling object falls towards earth because the force exerted on the object by the earth is greater than the force exerted by the object on earth. True or False? Explain why?

12. Date: 2/10 Goal: I can analyze the factors affecting the gravitational force between two objects. Bell Ringer: If you quadruple the distance between two objects, what happens to the force of gravity between the two objects? Explain why.

13. Two objects in space are mutually attracted by gravitational forces created in space-time by their masses. The magnitude of the force was first formulated by Isaac Newton, and the equation
Fg = GMm/r2
has become known as Newton's Law of Universal Gravitation.

14. Date: 2/10 Goal: I can understand the changes in the earth’s gravitational field. video

15. Date: 2/13 Goal: I can analyze the factors affecting the gravitational force between two objects. TB p.385

16. Date: 2/13 Goal: I can analyze the factors affecting the gravitational force between two objects. With your shoulder partner complete TB p. 390 Essential Questions

17. Date: 2/13 Goal: I can analyze the factors affecting the gravitational force between two objects. With your shoulder partner complete TB p.387 #1-5 TB p. 390 Essential Questions

18. Date: 2/13 Goal: I can analyze the factors affecting the gravitational force between two objects. With your shoulder partner complete TB p.387 #1-5 TB p. 390 Essential Questions

19. Date: 2/14 Goal: I can analyze the factors affecting the gravitational force between two objects.
Bell Ringer: What would happen to the gravitational force between two objects if:
the mass of one object was tripled?
The distance between the two objects is doubled?
Write your
answers in terms
of F

20. Dyson
How does cyclonic separation work?
Look inside the cyclone assembly where the pre-motor filter sits. Along the top, you’ll see the top of the two tiers of small cyclones. Why did the engineers add this to the design when an outer cyclone already filters dirt and debris in the bin Why is the pre-motor filter made of foam?
Look at the post-motor filter – why do you think the material is pleated?

21. Dyson
4. Why is it useful to be able to retract the cable at the push of a button? How does the cable rewind unit work?
What is an electric motor – and why is it needed in the DC39?
How does the relief valve know when to open?

22. Date: 2/15 Goal: I can analyze the factors affecting the gravitational force between two objects.
Bell Ringer: If the gravitational force between two objects is 90 N, what would the force be if the distance between the two object was reduced by half? Write in your notebook

23. Dyson 2/15
1. What is the neck of the Tangle-free Turbine
Tool made of?
2. Why is it important that the Tangle-free Turbine Tool is made out of a tough material?
What is an electric motor – and why is it needed in the DC39?
How does the relief valve know when to open?

24. Dyson 2/15
1. What is the neck of the Tangle-free Turbine
Tool made of? Why is it important that the Tangle-free Turbine Tool is made out of a tough material?
Why is the soleplate spring loaded?
Why does the turbine drive gears, instead of just driving the discs?
Compare the teeth on the various gears. What’s different and how does this impact the function of the tool?
What material are the two main gears made out of? Why is this material important?

25. Dyson 2/15 4. What do you notice about the shape of the screw boss
Dyson 2/15 4. What do you notice about the shape of the screw boss? What is the purpose of this shape? 5. Why are the bristles red? What is the function of the bristles and what are they made of? Why are the discs oval in shape? Why do the discs counter-rotate?

26. Date: 2/16 Goal: I can demonstrate my understanding of the factors affecting the gravitational force between two objects.
Bell Ringer:
Two bodies attract one another with a gravitational force of 30N. What will be the force of attraction if the mass of one body is tripled and the distance between them is doubled?

27. Date: 2/17 Goal: I can demonstrate my understanding of the factors affecting the gravitational force between two objects.
Bell Ringer:
Two bodies attract one another with a gravitational force of 120N. What will be the force of attraction if the mass of one body is quadrupled and the distance between them is halved?

28. Date: 2/16 Goal: I can analyze the factors affecting the gravitational force between two objects.
TB p #1-5 Title TB p. 390 # min

29. Date: 2/16 Goal: I can analyze the factors affecting the gravitational force between two objects.
With your shoulder partner complete “Physics To Go” TB p #1-5 Title TB p. 390 # min

30. Date: 2/10 Goal: I can analyze the factors affecting the gravitational force between two objects. Discuss reading Equation Change mass what is the result on F Change r what is the result on F

31. Date: 2/12 Goal: I can demonstrate my understanding of the factors affecting the gravitational force between two objects. Discuss reading Equation Change mass what is the result on F Change r what is the result on F

32. Date: 2/12 Goal: I can demonstrate my understanding of the factors affecting the gravitational force between two objects. Bell Ringer: Why did you choose Amundsen as your high school? What other schools were you considering?

33. Date: 2/12 Goal: I can demonstrate my understanding of the factors affecting the gravitational force between two objects.
Quiz practice:
A falling object falls towards earth because the force exerted on the object by the earth is greater than the force exerted by the object on earth.

34. Date: 2/16 Goal: I can demonstrate my understanding of the factors affecting the gravitational force between two objects. With your shoulder partner check the answers for Question on TB p. 390 #1-10

35. Date: 2/16 Goal: I can demonstrate my understanding of the factors affecting the gravitational force between two objects. Review for Quiz TB p. 390 #1-10 TB p. 390 Essential Questions TB p. 387 #1-5 TB p.382 #1-3

36. TB p. 390 Essential Questions TB p. 387 #1-5 TB p.382 #1-3
Date: 2/16 Goal: I can demonstrate my understanding of the factors affecting the gravitational force between two objects.
Review for Quiz
TB p. 390 #1-10
TB p. 390 Essential Questions
TB p. 387 #1-5
TB p.382 #1-3
Ex. Credit: Why did you choose Amundsen as your high school? What other schools were you considering?
Do Not Talk

37. Due Today TB p. 390 #1-10 TB p. 390 Essential Questions TB p
Due Today TB p. 390 #1-10 TB p. 390 Essential Questions TB p. 387 #1-5 TB p.382 #1-3 Do Not Talk

38. Write in your Notebook when you are finished with the quiz
2/17 Ex. Credit:
Why did you choose Amundsen as your high school?
What other schools were you considering?
Please remain quiet
You could lose points

39. Write in your Notebook when you are finished with the quiz
2/17 Ex. Credit:
Why did you choose Amundsen as your high school? What other schools were you considering?
Due Today
TB p. 390 #1-10
TB p. 390 Essential Questions
TB p. 387 #1-5
TB p.382 #1-3
Do Not Talk

40. Date: 11/20 Goal: I can analyze the graph of acceleration due to gravity vs distance from the center of the earth.
Work with you shoulder partner Complete WB p Write your name on the paper Use TB p min

41. Date: 11/20 Goal: I can analyze the graph of acceleration due to gravity vs distance from the center of the earth.
Work with you shoulder partner Complete WB p Class discussion

42. Date: 11/20 Goal: I can analyze the graph of acceleration due to gravity vs distance from the center of the earth.
Work with you shoulder partner Complete WB p min

43. Date: 11/20 Goal: I can analyze the graph of acceleration due to gravity vs distance from the center of the earth.
Work with you shoulder partner Complete WB p. 61 Write your name on the paper Class discussion

44. Date: 11/21 Goal: I can analyze the graph of acceleration due to gravity vs distance from the center of the earth.
Work with you shoulder partner Complete WB p. 61 Write your name on the paper Class discussion

45. Date: 11/21 Goal: I can analyze the graph of acceleration due to gravity vs distance from the center of the earth.
Bell Ringer: If the gravitational force between two objects is 90 N, what would the force be if the distance between the two object was reduced by half? Write in your notebook

46. Date: 11/21 Goal: I can analyze the graph of acceleration due to gravity vs distance from the center of the earth.
Work with you shoulder partner Complete WB p min

47. Date: 11/21 Goal: I can analyze the graph of acceleration due to gravity vs distance from the center of the earth.
Work with you shoulder partner Complete WB p Write your name on the paper Class discussion

51. Two objects in space are mutually attracted by gravitational forces created in space-time by their masses. The magnitude of the force was first formulated by Isaac Newton, and the equation
Fg = GMm/r2
has become known as Newton's Law of Universal Gravitation.

52. The gravitational constant, denoted G, is an empirical physical constant involved in the calculation of the gravitational attraction between objects with mass. It appears in Newton's law of universal gravitation and in Einstein's theory of general relativity. It is also known as the universal gravitational constant, Newton's constant, and colloquially Big G. It should not be confused with "little g" (g), which is the local gravitational field (equivalent to the local acceleration due to gravity), especially that at the Earth's surface; see Earth's gravity and Standard gravity.
According to the law of universal gravitation, the attractive force (F) between two bodies is proportional to the product of their masses (m1 and m2), and inversely proportional to the square of the distance (r) between them: