APlusPhysics Forumshttp://aplusphysics.com/community/index.php?/discover/13/APlusPhysics Community - APlusPhysics ForumsenIntroductory Rotational Equilibrium Problemhttp://aplusphysics.com/community/index.php?/videos/view-1054-introductory-rotational-equilibrium-problem/A uniform 0.093 kg meterstick is supported at the 15 cm and 92 cm marks. When a 0.250 kg object is placed at the 6.0 cm mark, what are the magnitudes of the forces supporting the meterstick? Want Lecture Notes? This is an AP Physics 1 Topic.
Content Times:
0:07 The problem
1:35 Summing the forces
2:55 Summing the torques
5:17 Combining equations
6:04 Torque distances
7:14 The units!!
8:20 Finding Force Normal 1
9:26 Testing our answers
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Rotational Equilibrium Introduction (and Static Equilibrium too!!)
Please support me on Patreon!
Thank you to Scott Carter, Christopher Becke, and Jonathan Everett for being my Quality Control Team for this video.Sun, 16 Dec 2018 19:14:39 +0000Rotational Equilibrium Introduction (and Static Equilibrium too!!)http://aplusphysics.com/community/index.php?/videos/view-1053-rotational-equilibrium-introduction-and-static-equilibrium-too/An introduction to Rotational Equilibrium with a review of Translational Equilibrium and demonstrations. Wait there’s more … Static Equilibrium! Want Lecture Notes? This is an AP Physics 1 Topic.
Content Times:
0:07 Reviewing Translational Equilibrium
1:21 Visualizing Translational Equilibrium
2:07 Rotational Equilibrium Introduction
3:09 Visualizing Rotational Equilibrium
4:22 Static Equilibrium
Next Video: Introductory Rotational Equilibrium Problem
Multilingual? Please help translate Flipping Physics videos!
Previous Video: (2 of 2) Measuring the Rotational Inertia of a Bike Wheel
Please support me on Patreon!
Thank you to Scott Carter, Christopher Becke, and Jonathan Everett for being my Quality Control Team for this video.Sun, 09 Dec 2018 19:54:17 +0000(2 of 2) Measuring the Rotational Inertia of a Bike Wheelhttp://aplusphysics.com/community/index.php?/videos/view-1052-2-of-2-measuring-the-rotational-inertia-of-a-bike-wheel/1) Calculating if our answer makes sense. 2) Why can’t we sum the torques on everything? 3) Finding the force of tension. Want Lecture Notes? This is an AP Physics 1 Topic.
Content Times:
0:01 Reviewing from last time
1:08 Does it make sense?
2:41 Calculating the fraction
3:41 Sum the torques on everything?
6:07 Solving for force of tension
8:24 Testing our answer
Next Video: Rotational Equilibrium Introduction (and Static Equilibrium too!!)
Multilingual? Please help translate Flipping Physics videos!
Previous Video: (1 of 2) Measuring the Rotational Inertia of a Bike Wheel
Please support me on Patreon!
Thank you to Scott Carter, Christopher Becke, and Jonathan Everett for being my Quality Control Team for this video.Sun, 02 Dec 2018 21:06:58 +0000(1 of 2) Measuring the Rotational Inertia of a Bike Wheelhttp://aplusphysics.com/community/index.php?/videos/view-1051-1-of-2-measuring-the-rotational-inertia-of-a-bike-wheel/That’s right, we actually measure the rotational inertia of a bicycle wheel. How cool is that? Want Lecture Notes? This is an AP Physics 1 Topic.
Content Times:
0:10 Basic setup
0:44 Free Body Diagram
1:30 Finding net torque
3:10 Finding force of tension
4:51 Linear and angular acceleration
5:42 Uniformly angularly accelerated motion
7:00 What do we need to know?
7:35 Solving the problem
Next Video: (2 of 2) Measuring the Rotational Inertia of a Bike Wheel
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Introductory Rotational Form of Newton's Second Law Problem
Please support me on Patreon!
Thank you to Scott Carter, Christopher Becke, Jonathan Everett, and Faiaz Rahman for being my Quality Control Team for this video.Sun, 25 Nov 2018 17:50:44 +0000Introductory Rotational Form of Newton's Second Law Problemhttp://aplusphysics.com/community/index.php?/videos/view-1050-introductory-rotational-form-of-newtons-second-law-problem/A basic rotational form of Newton’s Second Law problem with only one force. Want Lecture Notes? This is an AP Physics 1 Topic.
Content Times:
0:08 The problem
1:17 Free Body Diagram
1:37 Summing the torques
3:44 The direction
Next Video: (1 of 2) Measuring the Rotational Inertia of a Bike Wheel
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Introductory Rotational Form of Newton's Second Law Problem
Please support me on Patreon!
Thank you to Scott Carter, Christopher Becke, Jonathan Everett, and Faiaz Rahman for being my Quality Control Team for this video.Sun, 18 Nov 2018 18:54:22 +0000Demonstrating Rotational Inertia (or Moment of Inertia)http://aplusphysics.com/community/index.php?/videos/view-1049-demonstrating-rotational-inertia-or-moment-of-inertia/Thank you to Arbor Scientific for letting me borrow their Rotational Inertia Demonstrator to … uh … demonstrate rotational inertia. Want Lecture Notes? This is an AP Physics 1 Topic.
Content Times:
0:22 The Rotational Inertia Demonstrator
0:58 Rotational Inertia
1:40 Demonstration #1
2:00 Demonstration #2
2:55 Why always balanced?
4:30 Demonstration #3
5:27 Demonstration #4
Next Video: Introductory Rotational Form of Newton's Second Law Problem
Want a Rotational Inertia Demonstrator?
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Rotational Form of Newton's Second Law - Introduction
Please support me on Patreon!
Thank you to Scott Carter, Christopher Becke, Jonathan Everett, and Faiaz Rahman for being my Quality Control Team for this video.Sun, 11 Nov 2018 20:08:29 +0000Rotational Form of Newton's Second Law - Introductionhttp://aplusphysics.com/community/index.php?/videos/view-1048-rotational-form-of-newtons-second-law-introduction/A very basic introduction to the rotational form of Newton’s Second Law of Motion by way of its translational form. Want Lecture Notes? This is an AP Physics 1 Topic.
Content Times:
0:15 Newton’s Second Law
0:48 The rotational form
1:59 Using the equation
3:13 In words
Next Video: Demonstrating Rotational Inertia (or Moment of Inertia)
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Net Torque on a Door Problem
Please support me on Patreon!
Thank you to Scott Carter, Christopher Becke, Jonathan Everett, and Faiaz Rahman for being my Quality Control Team for this video.Sun, 04 Nov 2018 22:03:26 +0000Net Torque on a Door Problemhttp://aplusphysics.com/community/index.php?/videos/view-1047-net-torque-on-a-door-problem/Three people push on a door. We determine the net torque. Want Lecture Notes? This is an AP Physics 1 Topic.
Content Times:
0:07 Translating the problem
2:00 Solving the problem
3:07 Torque Direction!
Next Video: Rotational Form of Newton's Second Law - Introduction
Multilingual? Please help translate Flipping Physics videos!
Previous Video: The Right Hand Rule for Torque
Please support me on Patreon!
Thank you to Christopher Becke and Scott Carter for being my Quality Control Team for this video.Sun, 28 Oct 2018 19:13:10 +0000The Right Hand Rule for Torquehttp://aplusphysics.com/community/index.php?/videos/view-1046-the-right-hand-rule-for-torque/The right hand rule for the direction of torque is described and demonstrated six times. Want Lecture Notes?
Content Times:
0:26 The Right Hand Rule
0:47 Demonstration #1
1:27 Demonstration #2
2:37 Demonstration #3
3:20 Demonstration #4
3:40 Demonstration #5
4:24 Demonstration #6
Next Video: Net Torque on a Door Problem
Multilingual? Please help translate Flipping Physics videos!
Previous Video: An Introductory Torque Wrench Problem
Please support me on Patreon!
Thank you to Christopher Becke and Scott Carter for being my Quality Control Team for this video.Sun, 21 Oct 2018 20:43:30 +0000An Introductory Torque Wrench Problemhttp://aplusphysics.com/community/index.php?/videos/view-1045-an-introductory-torque-wrench-problem/A problem involving forces on a wrench is used to determine the torque exerted by the wrench. A “cheater pipe” is also added.
Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:07 Translating the problem
2:35 Solving the problem
3:06 Arguing about the angle
4:44 Adding a “Part B”
5:40 Demonstrating the “cheater pipe”
Next Video: The Right Hand Rule for Torque
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Torque Introduction
Please support me on Patreon!
Thank you to Christopher Becke and Scott Carter for being my Quality Control Team for this video.Sun, 14 Oct 2018 20:11:32 +0000Torque Introductionhttp://aplusphysics.com/community/index.php?/videos/view-1044-torque-introduction/Translational and Rotational motion are demonstrated and reviewed. Torque is introduced via the equation and several door opening demonstrations. Moment arm or lever arm is defined and illustrated.
Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:06 Translational and Rotational Motion
0:58 Defining Torque
1:53 The torque equation
2:59 Door example #1
4:56 Door example #2
6:11 Door example #3
6:58 Defining moment arm
9:18 Torque units
Next Video: An Introductory Torque Wrench Problem
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Moments of Inertia of Rigid Objects with Shape
Please support me on Patreon!
Thank you to Christopher Becke and Scott Carter for being my Quality Control Team for this video.Sun, 07 Oct 2018 19:02:01 +0000Moments of Inertia of Rigid Objects with Shapehttp://aplusphysics.com/community/index.php?/videos/view-1043-moments-of-inertia-of-rigid-objects-with-shape/The moment of inertia of a system of particles equation is used to estimate six different moments of inertia of rigid objects with constant density. Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:10 Visualizing the examples
1:09 How we estimate
2:16 Thin rod - center of mass
2:57 Thin rod - one end
4:00 Thin, hollow cylinder - long cylindrical axis
6:32 Solid cylinder - long cylindrical axis
8:23 Solid sphere - center of mass
9:11 Thin, hollow sphere - center of mass
10:31 Important review points
Next Video: Torque Introduction
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Eggs in a Carton Moment of Inertia Problem
Please support me on Patreon!
Thank you to Christopher Becke, Andres Ramos, and Aarti Sangwan for being my Quality Control Team for this video.Mon, 24 Sep 2018 00:26:31 +0000Eggs in a Carton Moment of Inertia Problemhttp://aplusphysics.com/community/index.php?/videos/view-1042-eggs-in-a-carton-moment-of-inertia-problem/Two equal mass eggs are placed at either end in an egg carton of negligible mass. The egg carton is initially rotated about its middle. If the egg carton is now rotated about one end, what is the final moment of inertia of the eggs relative to their initial moment of inertia? Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:07 Translating the problem
0:47 Initial moment of inertia
1:52 Final moment of inertia
2:46 This is a rough estimate
Next Video: Moments of Inertia of Rigid Objects with Shape
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Introductory Moment of Inertia and Rotational Kinetic Energy Problem
Please support me on Patreon!
Thank you to Christopher Becke for being my Quality Control Team for this video.Sun, 16 Sep 2018 19:21:00 +0000Introductory Moment of Inertia and Rotational Kinetic Energy Problemhttp://aplusphysics.com/community/index.php?/videos/view-1041-introductory-moment-of-inertia-and-rotational-kinetic-energy-problem/Three 20.0-gram masses are 9.4 cm from an axis of rotation and rotating at 152 revolutions per minute. What is the moment of inertia of the three-object system? The strings holding the masses are of negligible mass. Rotational Kinetic Energy is also solved for and correct units are determined. Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:02 Demonstration
0:14 Translating the problem
0:57 Solving the problem
2:40 Moment of Inertia and angular velocity
3:35 Rotational Kinetic Energy
4:04 Fixing the units
6:27 Solving for joules
7:17 Comparing to Gravitational Potential Energy
Next Video: Eggs in a Carton Moment of Inertia Problem
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Moment of Inertia Introduction and Rotational Kinetic Energy Derivation
Please support me on Patreon!
Thank you to Scott Carter, Jonathan Everett, and Christopher Becke for being my Quality Control Team for this video.Sun, 09 Sep 2018 19:08:40 +0000Moment of Inertia Introduction and Rotational Kinetic Energy Derivationhttp://aplusphysics.com/community/index.php?/videos/view-1040-moment-of-inertia-introduction-and-rotational-kinetic-energy-derivation/The concept of kinetic energy applied to a stationary, rotating wheel is used to define Moment of Inertia and derive Rotational Kinetic Energy. Moment of Inertia is demonstrated. Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:07 Kinetic Energy of rotation
2:24 Defining Moment of Inertia
3:00 Defining Rotational Kinetic Energy
4:29 “Rotational Mass”
5:44 Demonstration #1
6:45 Demonstration #2
Next Video: Introductory Moment of Inertia and Rotational Kinetic Energy Problem
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Conical Pendulum Demonstration and Problem
Please support me on Patreon!
Thank you to Scott Carter, Kevin Kulka, Jonathan Everett, and Christopher Becke for being my Quality Control Team for this video.Sun, 02 Sep 2018 16:09:43 +0000Center of Mass Introductionhttp://aplusphysics.com/community/index.php?/videos/view-1039-center-of-mass-introduction/Sun, 26 Aug 2018 19:43:54 +0000Throwing a Ball in a Boat - Demonstrating Center of Masshttp://aplusphysics.com/community/index.php?/videos/view-1038-throwing-a-ball-in-a-boat-demonstrating-center-of-mass/When I throw a massive ball to the left such that it lands in the other end of the canoe, what will happen to the positions of the objects? What if the ball does not land in the canoe? This video provides answers and solutions to those questions. Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:01 Ball lands in canoe center of mass question
0:52 Demonstrating the answer
1:16 Explaining the answer
3:31 What is the ball lands outside the canoe?
4:28 Demonstrating the answer
5:08 The math solution
8:03 The physics works!
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Center of Mass of an Object with a Hole
Please support me on Patreon!
Thank you to Will Longsworth, Christopher Becke, Jonathan Everett, Scott Carter, and Aarti Sangwan for being my Quality Control Team for this video.
Thank you to Youssef Nasr for transcribing the English subtitles of this video.Sun, 19 Aug 2018 21:13:14 +0000Center of Mass of an Object with a Holehttp://aplusphysics.com/community/index.php?/videos/view-1037-center-of-mass-of-an-object-with-a-hole/How to find the center of mass of an object with a missing piece. Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:07 The problem
1:18 Center of mass locations
2:59 Solving the problem
5:14 Testing the answer
Next Video: Throwing a Ball in a Boat - Demonstrating Center of Mass
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Center of Mass of an Irregular Object
Please support me on Patreon!
Thank you to Christopher Becke, Jonathan Everett, and Scott Carter for being my Quality Control Team for this video.
Thank you to Youssef Nasr for transcribing the English subtitles of this video.Mon, 13 Aug 2018 14:03:55 +0000Center of Mass of an Irregular Objecthttp://aplusphysics.com/community/index.php?/videos/view-1036-center-of-mass-of-an-irregular-object/How to find the center of mass of an irregularly shaped, flat object. Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:08 The problem
0:57 Translating the problem
2:52 Area instead of mass
4:42 Solving the problem
6:05 Understanding the answer
Next Video: Center of Mass of an Object with a Hole
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Calculating the Center of Mass of a System of Particles
Please support me on Patreon!
Thank you to Christopher Becke, Jonathan Everett, Scott Carter, and Aarti Sangwan for being my Quality Control Team for this video.
Thank you to Youssef Nasr for transcribing the English subtitles of this video.Mon, 06 Aug 2018 18:46:45 +0000Calculating the Center of Mass of a System of Particleshttp://aplusphysics.com/community/index.php?/videos/view-1035-calculating-the-center-of-mass-of-a-system-of-particles/Three point objects are located at various locations on a Cartesian coordinate system. Mass 1, with a mass of 1.1 kg, is located at (1.0,1.5) m. Mass 2, with a mass of 3.4 kg, is located at (3.0,1.0) m. Mass 3, with a mass of 1.3 kg, is located at (1.5,2.5) m. Where is the center of mass of the three-object system? Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:07 The problem
2:30 The equation
4:16 Solving the problem
5:51 Not the centroid!
Next Video: Center of Mass of an Irregular Object
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Do Your Feet Affect How Far You Slide on a Water Slide?
Please support me on Patreon!
Thank you to Christopher Becke, Jonathan Everett, Scott Carter, Kathy Willard, and Kevin Kulka for being my Quality Control Team for this video.
Thank you to Youssef Nasr for transcribing the English subtitles of this video.
Picture credits:
Cartesian Coordinate System https://commons.wikimedia.org/wiki/File:Cartesian-coordinate-system.svg
René Descartes https://commons.wikimedia.org/wiki/File:Frans_Hals_-_Portret_van_René_Descartes.jpgWed, 01 Aug 2018 18:10:51 +0000Harnessing the Power of Spreadsheets in Physicshttp://aplusphysics.com/community/index.php?/videos/view-1034-harnessing-the-power-of-spreadsheets-in-physics/Basic demonstration of how to use spreadsheets in an introductory physics class. Topics listed below. This is an AP Physics 1 topic.
Content Times:
0:33 Basic data collection
0:58 Inputting data
3:45 Equations
8:39 Graphs or charts
12:40 Correcting mistakes
14:08 Formatting charts
15:23 Best-fit lines or trendlines
19:52 Helpful tips
21:50 Printing
Multilingual? Please help translate Flipping Physics videos!
Another Video: Introduction to Projectile Motion
Please support me on Patreon!
Thank you to Scott Carter, Christopher Becke, and Sawdog for being my Quality Control Team for this video.
Thank you to Youssef Nasr for transcribing the English subtitles of this video.Sun, 22 Jul 2018 21:55:30 +0000Creating Circular Motion from Sine and Cosine Curveshttp://aplusphysics.com/community/index.php?/videos/view-1033-creating-circular-motion-from-sine-and-cosine-curves/Demonstrating how sine and cosine simple harmonic motion waves can create circular motion. Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:01 y-position
0:31 x-position
1:35 Combining motions
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Demonstrating Position, Velocity, and Acceleration of a Mass-Spring System
Please support me on Patreon!
Thank you to Scott Carter, Christopher Becke, and Sawdog for being my Quality Control Team for this video.
Thank you to Youssef Nasr for transcribing the English subtitles of this video.Sun, 15 Jul 2018 21:01:19 +0000Demonstrating Position, Velocity, and Acceleration of a Mass-Spring Systemhttp://aplusphysics.com/community/index.php?/videos/view-1032-demonstrating-position-velocity-and-acceleration-of-a-mass-spring-system/A “live” demonstration of of collecting position, velocity, and acceleration of a vertical mass-spring system.
Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:30 The basic setup
1:24 The equations
2:15 Position vs. Time
3:20 Velocity vs. Time
3:58 Acceleration vs. Time
5:20 Determining Period
7:09 Determining Spring Constant
8:14 Best-fit sine curve
Next Video: Creating Circular Motion from Sine and Cosine Curves
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Simple Harmonic Motion - Graphs of Mechanical Energies
Please support me on Patreon!
Thank you to Christopher Becke for being the sole member of my Quality Control Team for this video.
Thank you to Youssef Nasr for transcribing the English subtitles of this video.Sun, 15 Jul 2018 20:58:33 +0000Simple Harmonic Motion - Graphs of Mechanical Energieshttp://aplusphysics.com/community/index.php?/videos/view-1031-simple-harmonic-motion-graphs-of-mechanical-energies/Kinetic energy and elastic potential energy as functions of time graphs for a horizontal mass-spring system in simple harmonic motion are demonstrated. Conservation of energy is shown.
Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:12 The positions
0:40 Kinetic energy
1:49 Elastic potential energy
2:44 Total mechanical energy
5:10 Including friction
Next Video: Demonstrating Position, Velocity, and Acceleration of a Mass-Spring System
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Simple Harmonic Motion - Graphs of Position, Velocity, and Acceleration
Please support me on Patreon!
Thank you to Scott Carter, Christopher Becke, and Sawdog for being my Quality Control Team for this video.
Thank you to Youssef Nasr for transcribing the English subtitles of this video.Sun, 15 Jul 2018 20:55:54 +0000Simple Harmonic Motion - Graphs of Position, Velocity, and Accelerationhttp://aplusphysics.com/community/index.php?/videos/view-1030-simple-harmonic-motion-graphs-of-position-velocity-and-acceleration/Position, velocity, and acceleration as a function of time graphs for an object in simple harmonic motion are shown and demonstrated. Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:01 Reviewing the equations
1:46 Position graph
2:50 Velocity graph
4:10 Acceleration graph
5:48 Velocity from position
7:19 Acceleration from velocity
Next Video: Simple Harmonic Motion - Graphs of Mechanical Energies
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Simple Harmonic Motion - Velocity and Acceleration Equation Derivations
Please support me on Patreon!
Thank you to Scott Carter, Christopher Becke, and Sawdog for being my Quality Control Team for this video.
Thank you to Youssef Nasr for transcribing the English subtitles of this video.Sun, 24 Jun 2018 18:23:26 +0000