LESSON: FREE BODY DIAGRAM OF FORCES.pptx

Lecture

1. FREE BODY DIAGRAM: Forces in Action

2. Content Outcomes CO18. Free -Body Diagrams CO19. Applications of Newton’s Laws to single-body and multibody dynamics CO20. Problem solving using Newton’s Laws MOST ESSENTIAL LEARNING OUTCOMES LO23. Draw free-body diagrams  LO24. Apply Newton’s 2nd law and kinematics to obtain quantitative and qualitative conclusions about the velocity and acceleration of one or more bodies, and the contact and noncontact forces acting on one or more bodies  LO25. Solve problems using Newton’s Laws of motion in contexts such as, but not limited to, ropes and pulleys, the design of mobile sculptures, transport of loads on conveyor belts, force needed to move stalled vehicles, determination of safe driving speeds on banked curved roads

3. Table of contents 02 EXTERNAL FORCES ACTING ON THE OBJECT FORCES 01 FREE BODY DIAGRAM FBD 04 ACTIVITES OF ENRICHMENT PROBLEM SOLVING 03 APPLICATION OF FBD NEWTON’S LAW

4. “Stop acting so small. You are the universe in ecstatic motion.” –philosophical interpretation inspired by Newton’s perspective of forces and motion. — Eliezer Yudkowsky

5. FBD AN ILLUSTRATION OF ALL FORCES ACTING ON AN OBJECT.

6. WEIGHT NORMAL FORCE APPLIED FORCE FRICTION TENSION SPRING TRUST F orces in FBD

7. WEIGHT FORCE A downward force by the pull of gravity on an object. A gravitational force acting on an object.     Surface Surface 1

8. NORMAL FORCE A contact force exerted by a surface on an object. A force perpendicular to a plane or surface       Surface Surface Surface 2

9. A 10 kg box is resting on a flat horizontal surface. A. What is the normal force acting on the box? B. What is the normal force if a 2N force is pressed on the box? C. What is the normal force if 2N tension force is applied on the box? = mg = 10 kg (9.8 m/s 2 ) = 98 N   = mg + = 10 kg (9.8 m/s 2 ) + 2N = 100 N   = mg - = 10 kg (9.8 m/s 2 ) - 2N = 96 N  

10. APPLIED FORCE A mechanical force exerted by a body on an object. A force applied causes the object to accelerate in the same direction.     3 a a Surface a   = ma   = mg = m( g+a ) if additional acceleration is applied   = mg sin  

11. A 5 kg crate is placed on a smooth, horizontal surface. A constant horizontal force of 25 N is applied to the crate. What is the acceleration of the crate? = ma a = a = a = 5 m/s 2  

12. A weightlifter carrying a 2 kg box and lift it up with an upward acceleration of 0.25 m/s 2 . What is the force applied before lifting it up? What is the force after lifting it up? = m( g+a ) = 2 kg (9.8 m/s 2 + 0.25 m/s 2 ) = 2 kg (10.05 m/s 2 ) = 20.1 N     a   = mg = 2 kg (9.8 m/s 2 ) = 19.6 N    

13. A baseball player hits a 0.145 kg baseball with a bat, accelerating it from rest to a speed of 40 m/s in just 0.005 seconds. What is the average force exerted by the bat on the ball? = ma ) = 1160N   = a = a = 8000 m/s 2  

14. FRICTION FORCE A force that acts opposite the motion of an object. A force parallel to the surface of contact   4 f Surface   f a a

15. FRICTION FORCE A force that acts opposite the motion of an object. A force parallel to the surface of contact   4 f Surface   f a a 5N 5 10N 10 13.32N 13.72 15.9N 9.9 6N 25N 15 10N 5N 5 10N 10 13.32N 13.72 15.9N 9.9 6N 25N 15 10N = 0.7 = 0.5   = = 0.7(19.6N)=13.72 = = 0.5(19.8N)=9.9   2kg

16. A force of 65N is needed to start an 8kg box moving across a horizontal surface. A. Calculate the coefficient of static friction. B. Calculate the coefficient of kinetic friction if the box move with 1.4 m/s 2 acceleration.. = F - mg = - ma = - mg 8(1.4) = 65 - (8)(9.8) 11.2 = 65 - 78.4 11.2 - 65= - 78.4 = = 0.69N   F = F = F = mg 65N = (8kg)(9.8) 65N = (78.4N) = = 0.83N   f a

17. Activity Time Answer Exercise on page 130 on your General Physics 1 e-Book. Write answers in your notebook.

18. TENSION FORCE A pulling force by the string, cable, wire, rope or cord on an object. A force parallel with the string and away from the object     Surface 5 Surface Cable Rope

19. TENSION FORCE Formula for different scenarios:   5 Surface Cable   Surface Cable   Surface Cable

20. A 10 kg box is hanging from the ceiling by a single rope. The box is at rest. (a) What is the tension in the rope? (b) If a person pulls the box upward with an acceleration of 2 m/s², what is the new tension in the rope?   Surface Cable   = = 10 (9.8 ) = 98N   = = 10 (9.8 ) = 118N  

21. Imagine an elevator of mass 𝑚=1000 kg suspended by a cable. We’ll analyze three cases: Case 1: Elevator at Rest or Moving at Constant Speed Case 2: Elevator Accelerating Upward Case 3: Elevator Accelerating Downward

22. A horizontal cord is attached to a 6.0 kg body on a smooth tabletop. The cord passes a pulley attached at the edge with a body of mass 8.0 kg hanging at the edge. Calculate the tension force at both ends.   Surface Cable = = ( ) = ( ) = ( ) = =   = = 6.0 ( ) = = = = 58.8N     6.0kg 8.0kg = = 6.0 ( ) = 33.6N   = = 8.0 ( ) = 33.6N   = =  

23. SPRING FORCE A force exerted by a compressed or stretched spring upon any object attached to it. The direction of force is opposite the displacement of the object at the end of the spring 6

24. THRUST FORCE A mechanical force exerted by an engine to move object such as rockets, airplanes, or any aircrafts through the air. The direction of force is the same as the acceleration of the object barring any resistive forces. 6

25. Features of this topic Mercury is the closest planet to the Sun Mercury Venus is the second planet from the Sun Venus Despite being red, Mars is actually cold Mars

26. Key numbers Venus is the second planet from the Sun Venus Mercury is the closest planet to the Sun Mercury 40,000 150,000

27. An image is worth a thousand words

28. Practical uses of this subject Neptune is very far away from Earth Neptune Despite being red, Mars is actually cold Mars Mercury is the closest planet to the Sun Mercury Venus is the second planet from the Sun Venus

29. Demo for the lesson You can replace the image on the screen with your own work. Just right-click on it and select “Replace image”

30. Did you know this? Jupiter is the biggest planet of them all Neptune is very far away from Earth Neptune Jupiter Earth is the beautiful planet we all live on Earth Mercury is the closest planet to the Sun Mercury Venus is the second planet from the Sun Venus Despite being red, Mars is actually cold Mars

31. Problem vs. solution Mercury is the closest planet to the Sun and the smallest one Problem Venus has a beautiful name and is the second planet from the Sun Solution

32. The process Mercury is the smallest planet Step 01 Venus has a beautiful name Step 02 Mars is actually a cold planet Step 03 Neptune is the farthest planet Step 04

33. Awesome words

34. This is a map Venus has a beautiful name Venus Mars is actually a cold planet Mars Neptune is the farthest planet Neptune

35. This is a graph Venus has a beautiful name Venus Mars is actually a cold planet Mars Neptune is the farthest planet Neptune Mercury is the smallest planet Mercury 20% 10% 40% 30% Follow the link in the graph to modify its data and then paste the new one here. For more info, click here

36. 150,000 Big numbers may help you catch your audience’s attention

37. Overview diagram Mercury is the smallest planet Mercury Jupiter Venus has a beautiful name Venus Neptune is the farthest planet Neptune Mercury Neptune Mars Jupiter Saturn Mercury Earth Venus Mercury

38. The exercise Exercise A Exercise B Exercise C Part 01 Mercury is the smallest planet Jupiter is the biggest planet Neptune is the farthest planet Time: 5 min 7 min 9 min Part 02 Despite being red, Mars is cold Saturn is a gas giant and has rings Earth is our beautiful planet Time: 7 min 9 min 10 min Part 03 Venus has a beautiful name Pluto is considered a dwarf planet The Moon orbits around the Earth Time: 5 min 7 min 9 min

39. The assignment 1 Mercury is the smallest planet Mercury Venus has a beautiful name Venus Neptune is the farthest planet Neptune 2 3

40. Thanks! [email protected] [phone] yourwebsite.com Do you have any questions? Please keep this slide for attribution

41. Renewable energy icon pack

42. Alternative resources

43. Resources Vectors Hand drawn kawaii food collection Icons Renewable Energy Icon Pack Photos Glittering shine bulbs lights background Full frame of art deco style bokeh

44. In order to use this template, you must credit Slidesgo by keeping the Thanks slide. You are allowed to: - Modify this template. - Use it for both personal and commercial projects. You are not allowed to: - Sublicense, sell or rent any of Slidesgo Content (or a modified version of Slidesgo Content). - Distribute Slidesgo Content unless it has been expressly authorized by Slidesgo. - Include Slidesgo Content in an online or offline database or file. - Offer Slidesgo templates (or modified versions of Slidesgo templates) for download. - Acquire the copyright of Slidesgo Content. Instructions for use For more information about editing slides, please read our FAQs or visit Slidesgo School: https://slidesgo.com/faqs and https://slidesgo.com/slidesgo-school

45. Instructions for use (premium users) In order to use this template, you must be a Premium user on S lidesgo . You are allowed to: Modify this template. Use it for both personal and commercial purposes. Hide or delete the “Thanks” slide and the mention to Slidesgo in the credits. Share this template in an editable format with people who are not part of your team. You are not allowed to: Sublicense, sell or rent this Slidesgo Template (or a modified version of this Slidesgo Template). Distribute this Slidesgo Template (or a modified version of this Slidesgo Template) or include it in a database or in any other product or service that offers downloadable images, icons or presentations that may be subject to distribution or resale. Use any of the elements that are part of this Slidesgo Template in an isolated and separated way from this Template. Register any of the elements that are part of this template as a trademark or logo, or register it as a work in an intellectual property registry or similar. For more information about editing slides, please read our FAQs or visit Slidesgo School: https://slidesgo.com/faqs and https://slidesgo.com/slidesgo-school

46. This presentation has been made using the following fonts: Bitter ( https://fonts.google.com/specimen/Bitter ) Questrial ( https://fonts.google.com/specimen/Questrial ) #ffffff #4a237e #60db92 Fonts & colors used #797efc #febc71 #f26489

47. Create your Story with our illustrated concepts. Choose the style you like the most, edit its colors, pick the background and layers you want to show and bring them to life with the animator panel! It will boost your presentation. Check out How it Works. Pana Amico Bro Rafiki Cuate Storyset

48. You can easily resize these resources without losing quality. To change the color , just ungroup the resource and click on the object you want to change. Then, click on the paint bucket and select the color you want. Group the resource again when you’re done. You can also look for more infographics on Slidesgo. Use our editable graphic resources...

49. JANUARY FEBRUARY MARCH APRIL PHASE 1 Task 1 Task 2 JANUARY FEBRUARY MARCH APRIL MAY JUNE PHASE 1 PHASE 2 Task 1 Task 2 Task 1 Task 2

50. You can resize these icons without losing quality. You can change the stroke and fill color ; just select the icon and click on the paint bucket/pen . In Google Slides, you can also use Flaticon’s extension , allowing you to customize and add even more icons. ...and our sets of editable icons

51. Educational Icons Medical Icons

52. Business Icons Teamwork Icons

53. Help & Support Icons Avatar Icons

54. Creative Process Icons Performing Arts Icons

55. Nature Icons

56. SEO & Marketing Icons

57. Premium infographics... Add the title here Text 1 Text 2 Text 3 Text 4 Text 5 Text 6 2016 2017 2018 2019 2020 “Despite being red, Mars is actually a very cold place” “Mercury is closest planet to the Sun and the smallest” “Neptune is the farthest-known planet from the Sun” “Saturn is a gas giant and has several rings” “Venus has a beautiful name and is the second planet”

58. Premium infographics... “Mercury is closest planet to the Sun and the smallest” TITLE 1 75% “Mercury is closest planet to the Sun and the smallest” “Mercury is closest planet to the Sun and the smallest” “Mercury is closest planet to the Sun and the smallest” 75%

59. Digital Marketing Premium Icons

60. Online Learning Premium Icons

61. Laboratory Premium Icons

62. Goals & Results Premium Icons

63. Infographic Elements Premium Icons