Newtonian Mechanics · Chapter

Energy, Gravity and Oscillations

Track energy changes, gravitational interactions, and repeated motion using graphs and models.

Start chapter Next: Thermal Physics

Learning Path

Checkpoint 1: Energy

Work, Power and Conservation

Begin with work done, kinetic energy, gravitational potential energy, and power before tackling larger systems.

Checkpoint 2: Gravity

Fields, Orbits and Falling Motion

Use gravity models to connect force, potential, field strength, projectile motion, and orbital reasoning.

Checkpoint 3: Oscillations

Springs, Pendulums and SHM

Move from qualitative repeated motion to displacement, velocity, acceleration, period, and energy graphs.

Chapter Lens

How can one idea of energy help explain falling objects, gravitational fields, springs, pendulums, and repeated motion?

Energy is transferred between stores; useful models track what changes and what is conserved.
Gravitational interactions can be represented using force, field, potential, and orbital motion.
Oscillations repeat because a restoring effect acts toward equilibrium, with energy moving between forms.

Misconception Watch

Energy is not used up in an ideal model; it is transferred between stores or dissipated to the surroundings.
Zero velocity at a turning point does not mean zero acceleration.
Gravity still acts when an object is moving upward or momentarily at rest.

Chapter Concept Checks

1. A ball is thrown upward. At the highest point, which statement is most useful?

Answer: Its kinetic energy is minimum while gravitational potential energy is maximum.

Distractors to watch for: Its total mechanical energy must be zero. / Gravity stops acting for an instant. / Its mass changes because it has no speed.

2. In simple harmonic motion, why does the object repeatedly return toward equilibrium?

Answer: A restoring effect acts toward the equilibrium position.

Distractors to watch for: The object remembers its starting position. / The driving force is always in the direction of velocity. / Friction must be larger than the restoring force.

3. For two masses attracting gravitationally, what happens if the separation increases?

Answer: The gravitational force decreases.

Distractors to watch for: The gravitational force becomes independent of mass. / The gravitational force increases linearly. / The gravitational force becomes friction.

Starter Set

Begin with one strong interactive from each strand before browsing the full chapter.

Energy

Energy Pendulum Model

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Study Energy

Gravity

Earth Field And Potential Model

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Study Gravity

Oscillations

Amazing Pendulum Wave Effect

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Study Oscillations

Adaptive Suggestion

If this chapter feels hard, study the first few interactives and use the concept checks until your streak improves. If it feels easy, jump to resources with videos or OSPSG links and explain the model evidence in your own words.

Back to chapter map

1. Energy Pendulum Model

ejss_model_SHMxvapendulumjc

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Energy Pendulum Model With E Pedagogy Modeling Of Energy thumbnail

2. Energy Pendulum Model With E Pedagogy Modeling Of Energy

ejss_model_SHMxvapendulumsec

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Falling Basketball (Conservation Of Energy) thumbnail

3. Falling Basketball (Conservation Of Energy)

ejss_model_BasketBallCOEformuladrivenFinal

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LOL Diagram | Scenario 1: A Moving Toy Car thumbnail

4. LOL Diagram | Scenario 1: A Moving Toy Car

ejss_model_LOLlookangSLS / LOL

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LOL Diagram | Scenario 3: Lighting Up A Lamp thumbnail

5. LOL Diagram | Scenario 3: Lighting Up A Lamp

ejss_model_LOLlookangSLS / LOL / index3

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LOL Diagram | Scenario 7: Lighting Up A Lamp thumbnail

6. LOL Diagram | Scenario 7: Lighting Up A Lamp

ejss_model_LOLlookangSLS / LOL / index7

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LOL Diagram | Scenario 8: Radioactive Decay thumbnail

7. LOL Diagram | Scenario 8: Radioactive Decay

ejss_model_LOLlookangSLS / LOL / index8

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8. LOL Energy Diagram

ejss_model_LOLlookangSLS

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9. LOL Energy Diagram

ejss_model_LOLscenario1

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10. LOL Energy Diagram

ejss_model_LOLscenario10

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11. LOL Energy Diagram

ejss_model_LOLscenario11

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12. LOL Energy Diagram

ejss_model_LOLscenario12

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13. LOL Energy Diagram

ejss_model_LOLscenario2

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14. LOL Energy Diagram

ejss_model_LOLscenario3

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15. LOL Energy Diagram

ejss_model_LOLscenario4

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16. LOL Energy Diagram

ejss_model_LOLscenario5

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17. LOL Energy Diagram

ejss_model_LOLscenario6

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18. LOL Energy Diagram

ejss_model_LOLscenario7

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19. LOL Energy Diagram

ejss_model_LOLscenario8

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20. LOL Energy Diagram

ejss_model_LOLscenario9

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21. LOLmaster V 18

webejs_model_LOLmaster_v18

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22. LOLmaster V 19

webejs_model_LOLmaster_v19

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23. Roller Coaster Simulator

ejss_model_weeRollerCoaster

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Simplified Solar Panels In A Day From 6 A.M. To 6 P.M. thumbnail

24. Simplified Solar Panels In A Day From 6 A.M. To 6 P.M.

ejss_model_SolarPanelTry3

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Singapore Is 1° North Of The Equator Simplified Solar Panels In A Day From 6 A.M. To 6... thumbnail

25. Singapore Is 1° North Of The Equator Simplified Solar Panels In A Day From 6 A.M. To 6...

ejss_model_SolarPanelTry5

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26. Singapore Is 1° North Of The Equator Simplified Solar Panels In A Day From 6 A.M. To 6...

ejss_model_SolarPanelTry6

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LOL Diagram | Scenario 10: Releasing An Arrow thumbnail

27. LOL Diagram | Scenario 10: Releasing An Arrow

ejss_model_LOLlookangSLS / LOL / index10

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LOL Diagram | Scenario 11: Hammering A Nail thumbnail

28. LOL Diagram | Scenario 11: Hammering A Nail

ejss_model_LOLlookangSLS / LOL / index11

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LOL Diagram | Scenario 12: Raising A Load thumbnail

29. LOL Diagram | Scenario 12: Raising A Load

ejss_model_LOLlookangSLS / LOL / index12

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LOL Diagram | Scenario 2: Charging A Power Bank thumbnail

30. LOL Diagram | Scenario 2: Charging A Power Bank

ejss_model_LOLlookangSLS / LOL / index2

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LOL Diagram | Scenario 4: Sitting On A Swing thumbnail

31. LOL Diagram | Scenario 4: Sitting On A Swing

ejss_model_LOLlookangSLS / LOL / index4

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LOL Diagram | Scenario 5: Cooling A Hot Cup Of Tea thumbnail

32. LOL Diagram | Scenario 5: Cooling A Hot Cup Of Tea

ejss_model_LOLlookangSLS / LOL / index5

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LOL Diagram | Scenario 6: A Falling Stone thumbnail

33. LOL Diagram | Scenario 6: A Falling Stone

ejss_model_LOLlookangSLS / LOL / index6

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LOL Diagram | Scenario 9: Bungee Jumping thumbnail

34. LOL Diagram | Scenario 9: Bungee Jumping

ejss_model_LOLlookangSLS / LOL / index9

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35. Bungee SHM

ejss_model_horizontalspring_energy_displacement_graph

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LOL Energy Diagram Kosong Version For Teacher Peer Discussion thumbnail

36. LOL Energy Diagram Kosong Version For Teacher Peer Discussion

ejss_model_LOL_kosong

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37. Bungee Jump

ejss_model_BungeeJumpwee

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38. Energy Pendulum Model

ejss_model_SHMxvapendulumjc01

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39. Energy Pendulum Model

ejss_model_SHMxvapendulumpri

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Falling Basketbal (Conservation Of Energy) thumbnail

40. Falling Basketbal (Conservation Of Energy)

ejss_model_BasketBallCOEformuladriven2

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41. Falling Basketbal (Conservation Of Energy)

ejss_model_BasketBallCOEformuladrivenV3

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Horizontal Spring Energy Graph thumbnail

42. Horizontal Spring Energy Graph

ejss_model_horizontalspring_energy_graph

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43. LOL Energy Diagram

ejss_model_LOL_mastertemplate

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44. LOL Energy Diagram

ejss_model_LOL

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45. LOL Energy Diagram

ejss_model_LOLexport

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46. LOL Energy Diagram

ejss_model_LOLMasterTemplatev2

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47. LOL Energy Diagram

ejss_model_LOLtry7

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Projectile Motion Model With Energies Graph For Primary Science thumbnail

48. Projectile Motion Model With Energies Graph For Primary Science

ejss_model_projectileprimary

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Static And Kinetic Frictional Model For Primary School Science Inquiry thumbnail

49. Static And Kinetic Frictional Model For Primary School Science Inquiry

ejss_model_frictionprimaryenergy

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Energy Conversion Of A Ball On Free Fall thumbnail

50. Energy Conversion Of A Ball On Free Fall

ai / 03_PrincipleofConservationofEnergy_Final_20250510

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51. Bungeemodelenergy

trz / Bungeemodelenergy

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52. Bungeemodelenergy 02

trz / Bungeemodelenergy02

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53. Investigate Bungee Jump 1

trz / InvestigateBungeeJump1

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54. Pingpongballenergy

trz / pingpongballenergy

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55. Earth Field And Potential Model

ejss_model_gravity03_1

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56. 2 Mass Gravity Model

ejss_model_gravity10a

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Binary Stars Java Script Model thumbnail

57. Binary Stars Java Script Model

ejss_model_gravity02

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58. Earth And Satellite Model In 3 D Java Script Web GL

ejss_model_gravity10

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59. Geostationary Satellite Around Earth Model Activity J

ejss_model_gravity10 / EarthAndSatelite / EarthAndSateliteactivity

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60. Gravitational Field

ejss_model_gravity01 / Gravity01

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61. Gravitational Force Model

ejss_model_gravity04

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62. Gravitational Force Simulator

ejss_model_gravity01_0

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63. Lunar Lander Simulation

ejss_model_PICUP_lunarlander_frem

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Moon Phases Model With Sea Tides thumbnail

64. Moon Phases Model With Sea Tides

ejss_model_gravity01

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65. Newtons Mountain

ejss_model_gravity08

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66. Solar System Model

ejss_model_gravity09

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67. Lunar Lander Simulation

ejss_model_PICUP_lunarlander_frem / introduction

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Earth Moon Gravity Field And Potential In One Dimension Model thumbnail

68. Earth Moon Gravity Field And Potential In One Dimension Model

ejss_model_gravity11g

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Gravitational Acceleration And Potential Model thumbnail

69. Gravitational Acceleration And Potential Model

ejss_model_gravity06

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70. Gravitational Acceleration And Potential Model

ejss_model_gravity07

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Gravitational Field And Potential Earth Model thumbnail

71. Gravitational Field And Potential Earth Model

ejss_model_gravity07_1

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Gravitational Field Earth Model thumbnail

72. Gravitational Field Earth Model

ejss_model_gravity04_1

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73. Binary Stars Java Script Model

ejss_model_gravity02_1

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74. Earth And Satellite Model In 3 D Java Script Web GL

ejss_model_gravity10-1

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Earth Moon Gravity Potential Simulator thumbnail

75. Earth Moon Gravity Potential Simulator

ejss_model_gravity11

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76. Gravitational Force Model

ejss_model_gravity05

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Gravitational Force Model (Basic) thumbnail

77. Gravitational Force Model (Basic)

ejss_model_gravity01_1

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78. HORIZONS Web Interface

ejss_model_PICUP_marsmission_EJSStemplate / HORIZONS Web-InterfaceEarth20150829

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79. HORIZONS Web Interface

ejss_model_PICUP_marsmission_EJSStemplate / HORIZONS Web-InterfaceMars20150829

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80. HORIZONS Web Interface

ejss_model_PICUP_marsmission_EJSStemplate / MarsMissionTransitfrem_Template / HORIZONS Web-InterfaceEarth20150829

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81. HORIZONS Web Interface

ejss_model_PICUP_marsmission_EJSStemplate / MarsMissionTransitfrem_Template / HORIZONS Web-InterfaceMars20150829

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82. Kepler

ejss_model_keplerwee1

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83. Moon Phases

ejss_model_MoonPhases

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84. Newtons Mountain

ejss_model_gravity08_1

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85. Newtons Mountain

ejss_model_gravity08_2

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86. Periodic Orbits

ejss_model_e_periodic

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87. Periodic Orbits

ejss_model_periodic

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88. Survey

ejss_model_gravity12

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Traveling To Mars (Mars Mission Transit) thumbnail

89. Traveling To Mars (Mars Mission Transit)

ejss_model_PICUP_marsmission_EJSStemplate

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90. Two Body Orbits

ejss_model_TwoBodyOrbitswee

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7.2 Newton’S Law Of Gravitation thumbnail

91. 7.2 Newton’S Law Of Gravitation

ejss_model_gravity02_2

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92. EJSS Earth And Moon Model

ejss_model_EarthAndMoon3Dwee

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93. Angrybirdtracking

trz / angrybirdtracking

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94. Exercises

ejss_model_PICUP_lunarlander_frem / exercises

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95. Instructorguide

ejss_model_PICUP_lunarlander_frem / instructorguide

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96. Lunar Lander Simulation

ejss_model_PICUP_lunarlander_frem / solutions

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97. Theory

ejss_model_PICUP_lunarlander_frem / theory

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98. Two Body Orbit Theory

ejss_model_gravity02 / TwoBodyOrbits / TwoBodyOrbitTheory

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99. Oceanic Tides Simulation

02_newtonianmechanics_7gravity / oceanicTidalWaveGPTo3minihigh

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Tidal Earth And Moon System Simulation With Controls thumbnail

100. Tidal Earth And Moon System Simulation With Controls

02_newtonianmechanics_7gravity / oceanicTidalWaveDeepSeekR1

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101. Tidal Earth And Moon System Simulation With Controls

oceanicTidalWaveGPTo3minihigh / indexDeepSeek

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102. 7.2 Newton’S Law Of Gravitation

ejss_src_gravity02_2

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103. EJSS Earth And Moon Model

ejss_src_EarthAndMoon3Dwee

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104. 1 Instructorguide

ejss_model_PICUP_marsmission_EJSStemplate / 1instructorguide

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105. 1 Instructorguide

ejss_model_PICUP_marsmission_EJSStemplate / MarsMissionTransitfrem_Template / 1instructorguide

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106. 2 Theory

ejss_model_PICUP_marsmission_EJSStemplate / 2Theory

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107. 2 Theory

ejss_model_PICUP_marsmission_EJSStemplate / MarsMissionTransitfrem_Template / 2Theory

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108. 3 Excercises

ejss_model_PICUP_marsmission_EJSStemplate / 3Excercises

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109. 3 Excercises

ejss_model_PICUP_marsmission_EJSStemplate / MarsMissionTransitfrem_Template / 3Excercises

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110. 5 Solutions

ejss_model_PICUP_marsmission_EJSStemplate / 5Solutions

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111. 5 Solutions

ejss_model_PICUP_marsmission_EJSStemplate / MarsMissionTransitfrem_Template / 5Solutions

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112. Two Body Orbit Theory

ejss_model_gravity02_1 / TwoBodyOrbits / TwoBodyOrbitTheory

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113. Two Body Orbit Theory

ejss_model_TwoBodyOrbitswee / TwoBodyOrbits / TwoBodyOrbitTheory

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114. Amazing Pendulum Wave Effect

ejss_model_pendulum3Dwavewithbackground

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115. Amazing Pendulum Wave Effect

ejss_model_pendulum3Dwave

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Block And Spring On An Inclined Plane thumbnail

116. Block And Spring On An Inclined Plane

ejss_model_BlockAndSpringOnInclinedPlanewee

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117. Circular Motion Simulator

ejss_model_SHM045

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118. Ke,Pe,Te Vs T Simulator

ejss_model_SHM17

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119. Pendulum Simulator

ejss_model_SHM195

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120. Pendulum Toy

ejss_model_SHM01

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121. Pendulum Toy

ejss_model_SHM01realtime

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122. Pendulum Toy

ejss_model_SHM01realtimeODE

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123. Resonance Simulator

ejss_model_SHM24

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124. Resonance Simulator

ejss_model_SHM24SLS_resonance

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125. Resonance Simulator

ejss_model_SHM24SLStype0

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126. Vertical Spring Simulator

ejss_model_SHM161

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127. Vertical Spring Simulator

ejss_model_SHM161SLS_forcedoscillation

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128. X Vs T Simulator

ejss_model_SHM04

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129. Chapter SHM Example 01 02

ejss_model_SHM195 / SHMpendulum / Chapter SHM Example 01_02

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