A review of the physics principles moments, equilibrium with example questions taken from the IGCSE (International General Certificate of Secondary Education) exam papers. Video explanation similar to a Skype session with image examples of various ma...th problems worked out. Key Terms: Moment, Equilibrium, Force. Length: 14:51.[more]

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
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Previous Video: Conical Pendulum Demonstration and Problem
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Thank you to Scott Carter, Kevin Kulka, Jonathan Everett, and Christopher Becke for being my Quality Control Team for this video.[more]

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
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Previous Video: An Introductory Torque Wrench Problem
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Thank you to Christopher Becke and Scott Carter for being my Quality Control Team for this video.[more]

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
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Previous Video: Moments of Inertia of Rigid Objects with Shape
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Thank you to Christopher Becke and Scott Carter for being my Quality Control Team for this video.[more]

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
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Previous Video: Eggs in a Carton Moment of Inertia Problem
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Thank you to Christopher Becke, Andres Ramos, and Aarti Sangwan for being my Quality Control Team for this video.[more]

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
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Previous Video: Introductory Moment of Inertia and Rotational Kinetic Energy Problem
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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
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Previous Video: Moment of Inertia Introduction and Rotational Kinetic Energy Derivation
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Thank you to Scott Carter, Jonathan Everett, and Christopher Becke for being my Quality Control Team for this video.[more]

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
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Previous Video: Torque Introduction
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Thank you to Christopher Becke and Scott Carter for being my Quality Control Team for this video.[more]

This video, which is suitable for high school students, starts with a black screen because the instructor, in his conversational tone, uses it as a 'chalkboard.' Instructor uses different colors for clarification. (14:14)

This video, which is suitable for high school students, starts with a black screen because the instructor, in his conversational tone, uses it as a 'chalkboard.' Instructor uses different colors for clarification. (13:50)

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