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Introduction to Tension

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Uploaded on Feb 8, 2008

An introduction to tension. Solving for the tension(s) in a set of wires when a weight is hanging from them.
More free lessons at: http://www.khanacademy.org/video?v=_U...

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Physics

  1. 1

    Introduction to Vectors and Scalars

  2. 2

    Calculating Average Velocity or Speed

  3. 3

    Solving for Time

  4. 4

    Displacement from Time and Velocity Example

  5. 5

    Acceleration

  6. 6

    Newton's First Law of Motion

  7. 7

    Newton's Second Law of Motion

  8. 8

    Newton's Third Law of Motion

  9. 9

    Airbus A380 Take-off Time

  10. 10

    Airbus A380 Take-off Distance

  11. 11

    Why Distance is Area under Velocity-Time Line

  12. 12

    Average Velocity for Constant Acceleration

  13. 13

    Acceleration of Aircraft Carrier Takeoff

  14. 14

    Race Cars with Constant Speed Around Curve

  15. 15

    Introduction to Gravity

  16. 16

    Mass and Weight Clarification

  17. 17

    Gravity for Astronauts in Orbit

  18. 18

    Would a Brick or Feather Fall Faster

  19. 19

    Deriving Displacement as a Function of Time, Acceleration and Initial Velocity

  20. 20

    Plotting Projectile Displacement, Acceleration, and Velocity

  21. 21

    Projectile Height Given Time

  22. 22

    Deriving Max Projectile Displacement Given Time

  23. 23

    Impact Velocity From Given Height

  24. 24

    Visualizing Vectors in 2 Dimensions

  25. 25

    Projectile at an Angle

  26. 26

    Different Way to Determine Time in Air

  27. 27

    Launching and Landing on Different Elevations

  28. 28

    Total Displacement for Projectile

  29. 29

    Total Final Velocity for Projectile

  30. 30

    Correction to Total Final Velocity for Projectile

  31. 31

    Projectile on an Incline

  32. 32

    Unit Vectors and Engineering Notation

  33. 33

    Optimal angle for a projectile part 1

  34. 34

    Optimal angle for a projectile part 2 - Hangtime

  35. 35

    Optimal angle for a projectile part 3 - Horizontal distance as a function of angle (and speed)

  36. 36

    Optimal angle for a projectile part 4 Finding the optimal angle and distance with a bit of calculus

  37. 37

    Normal Force and Contact Force

  38. 38

    Normal Force in an Elevator

  39. 39

    Inclined Plane Force Components

  40. 40

    Ice Accelerating Down an Incline

  41. 41

    Force of Friction Keeping the Block Stationary

  42. 42

    Correction to Force of Friction Keeping the Block Stationary

  43. 43

    Force of Friction Keeping Velocity Constant

  44. 44

    Intuition on Static and Kinetic Friction Comparisons

  45. 45

    Static and Kinetic Friction Example

  46. Introduction to Tension

  47. 47

    Tension (part 2)

  48. 48

    Tension in an accelerating system and pie in the face

  49. 49

    [Private video]

  50. 50

    [Private video]

  51. 51

    Introduction to Momentum

  52. 52

    Momentum: Ice skater throws a ball

  53. 53

    2-dimensional momentum problem

  54. 54

    2-dimensional momentum problem (part 2)

  55. 55

    Introduction to work and energy

  56. 56

    Work and Energy (part 2)

  57. 57

    Conservation of Energy

  58. 58

    Work/Energy problem with Friction

  59. 59

    Introduction to mechanical advantage

  60. 60

    Mechanical Advantage (part 2)

  61. 61

    Mechanical Advantage (part 3)

  62. 62

    Center of Mass

  63. 63

    Introduction to Torque

  64. 64

    Moments

  65. 65

    Moments (part 2)

  66. 66

    Unit Vector Notation

  67. 67

    Unit Vector Notation (part 2)

  68. 68

    [Private video]

  69. 69

    [Private video]

  70. 70

    Projectile Motion with Ordered Set Notation

  71. 71

    Centripetal Force and Acceleration Intuition

  72. 72

    Visual Understanding of Centripetal Acceleration Formula

  73. 73

    Relationship between angular velocity and speed

  74. 74

    Calculus proof of centripetal acceleration formula

  75. 75

    Loop De Loop Question

  76. 76

    Loop De Loop Answer part 1

  77. 77

    Loop De Loop Answer part 2

  78. 78

    Acceleration Due to Gravity at the Space Station

  79. 79

    Space Station Speed in Orbit

  80. 80

    Conservation of angular momemtum

  81. 81

    Introduction to Newton's Law of Gravitation

  82. 82

    Gravitation (part 2)

  83. 83

    Intro to springs and Hooke's Law

  84. 84

    Potential energy stored in a spring

  85. 85

    Spring potential energy example (mistake in math)

  86. 86

    Introduction to Harmonic Motion

  87. 87

    Harmonic Motion Part 2 (calculus)

  88. 88

    Harmonic Motion Part 3 (no calculus)

  89. 89

    Fluids (part 1)

  90. 90

    Fluids (part 2)

  91. 91

    Fluids (part 3)

  92. 92

    Fluids (part 4)

  93. 93

    Fluids (part 5)

  94. 94

    Fluids (part 6)

  95. 95

    Fluids (part 7)

  96. 96

    Fluids (part 8)

  97. 97

    Fluids (part 9)

  98. 98

    Fluids (part 10)

  99. 99

    Fluids (part 11)

  100. 100

    Fluids (part 12)

  101. 101

    Thermodynamics (part 1)

  102. 102

    Thermodynamics (part 2)

  103. 103

    Thermodynamics (part 3)

  104. 104

    Thermodynamics (part 4)

  105. 105

    Thermodynamics (part 5)

  106. 106

    Electrostatics (part 1): Introduction to Charge and Coulomb's Law

  107. 107

    Electrostatics (part 2)

  108. 108

    Proof (Advanced): Field from infinite plate (part 1)

  109. 109

    Proof (Advanced): Field from infinite plate (part 2)

  110. 110

    Electric Potential Energy

  111. 111

    Electric Potential Energy (part 2-- involves calculus)

  112. 112

    Voltage

  113. 113

    Capacitance

  114. 114

    Circuits (part 1)

  115. 115

    Circuits (part 2)

  116. 116

    Circuits (part 3)

  117. 117

    Circuits (part 4)

  118. 118

    Cross product 1

  119. 119

    Cross Product 2

  120. 120

    Cross Product and Torque

  121. 121

    Introduction to Magnetism

  122. 122

    Magnetism 2

  123. 123

    Magnetism 3

  124. 124

    Magnetism 4

  125. 125

    Magnetism 5

  126. 126

    Magnetism 6: Magnetic field due to current

  127. 127

    Magnetism 7

  128. 128

    Magnetism 8

  129. 129

    Magnetism 9: Electric Motors

  130. 130

    Magnetism 10: Electric Motors

  131. 131

    Magnetism 11: Electric Motors

  132. 132

    Magnetism 12: Induced Current in a Wire

  133. 133

    The dot product

  134. 134

    Dot vs. Cross Product

  135. 135

    Calculating dot and cross products with unit vector notation

  136. 136

    Introduction to Waves

  137. 137

    Amplitude, Period, Frequency and Wavelength of Periodic Waves

  138. 138

    Introduction to the Doppler Effect

  139. 139

    Doppler effect formula for observed frequency

  140. 140

    Doppler effect formula when source is moving away

  141. 141

    When the source and the wave move at the same velocity

  142. 142

    Mach Numbers

  143. 143

    Specular and Diffuse Reflection

  144. 144

    Specular and Diffuse Reflection 2

  145. 145

    Refraction and Snell's Law

  146. 146

    Refraction in Water

  147. 147

    Snell's Law Examples 1

  148. 148

    Snell's Law Example 2

  149. 149

    Total Internal Reflection

  150. 150

    Virtual Image

  151. 151

    Parabolic Mirrors and Real Images

  152. 152

    Parabolic Mirrors 2

  153. 153

    Convex Parabolic Mirrors

  154. 154

    Convex Lenses

  155. 155

    Convex Lens Examples

  156. 156

    Concave Lenses

  157. 157

    Object Image and Focal Distance Relationship (Proof of Formula)

  158. 158

    Object Image Height and Distance Relationship

  159. 159

    Viewing g as the value of Earth's Gravitational Field Near the Surface

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