Flipping Physics
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?
Flipping Physics
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.
Flipping Physics
Graphing the Rotational Inertia of an Irregular Shape
We determine what data to collect to create a graph with rotational inertia as the slope of the best-fit line. Then we collect the data and determine the rotational inertia of an irregular shape.
Flipping Physics
Point Particle with Rigid Object Collision - Conservation of Angular Momentum Demonstration and Problem
A 5.3 g dart moving horizontally at 16.9 m/s collides with and sticks to a stationary Rotational Inertia Demonstrator a distance of 31.7 cm from the axis of rotation of the RID. What is the final angular velocity of the RID?
Flipping Physics
Angular Momentum and a Pulley Mass System
Angular momentum is used to determine the acceleration of a pulley mass system. two alternate solutions are shown, and the acceleration is demonstrated. This is an AP Physics C: Mechanics topic. Content Times: 0:00 The Problem 1:50 The...
Flipping Physics
Conservation of Angular Momentum Introduction and Demonstrations
Several demonstrations of #AngularMomentumConservation are shown using a rotating stool. The equations is also derived using Newton’s Second Law. Conservation of the direction of angular momentum is also demonstrated.
Flipping Physics
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...
Flipping Physics
Uniform Thin Hoop Rotational Inertia Derivation
Deriving the integral equation for the moment of inertia of a rigid body. Also deriving the rotational inertia of a uniform thin hoop. Want Lecture Notes? http://www.flippingphysics.com/rotati... This is an AP Physics C: Mechanics topic....
Flipping Physics
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.
Flipping Physics
2 Masses on a Pulley - Torque Demonstration
0.100 kg and 0.200 kg masses hang from either side of a frictionless #Pulley with a rotational inertia of 0.0137 kg·m^2 and radius of 0.0385 m. (a) What is the #AngularAcceleration of the pulley? (b) What is the #TensionForce in each...
Flipping Physics
Angular Momentum of a Rigid Body Derivation
Angular momentum of a rigid body is demonstrated and derived. This is an AP Physics C: Mechanics topic. Content Times: 0:00 The Demonstration 1:20 The Derivation 4:15 Newton’s Second Law
Flipping Physics
How the Force of Tension on a Pulley Changes with Acceleration
We predict and measure the force of tension acting on a pulley while the system is at rest and accelerating.
Flipping Physics
Which Will Be First? (Rolling Down an Incline)
A hollow sphere, solid sphere, and thin hoop are simultaneously released from rest at the top of an #incline. Which will reach the bottom first? Assume all objects are of uniform density. #RollingWithoutSlipping
Flipping Physics
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...
Flipping Physics
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!
Flipping Physics
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.
Flipping Physics
Rotational Form of Newton's Second Law - Introduction
A very basic introduction to the rotational form of Newton’s Second Law of Motion by way of its translational form.
Flipping Physics
What are the Equations for Kinetic Energy and Angular Momentum of a Point Particle Moving in a Circle?
When a point particle is moving along a circle, should we use the translational or rotational kinetic energy equation? Should we use the point particle or rigid object with shape equation for angular momentum? The equations are also...
Bozeman Science
Bozeman Science: Rotational Inertia
In the following video Paul Andersen explains how the angular momentum of an object if a product of the rotational inertia and the angular velocity. The rotational inertia depends on the mass, radius and shape of the rotating objects. A...
Sophia Learning
Sophia: Calculating Rotational Inertia
A screencast tutorial which demonstrates how to figure the rotational inertia of an object. [3:15]
Sophia Learning
Sophia: Components of Rotational Inertia
A video screencast demonstrating how the rotational inertia of an object depends on its mass and axis of rotation. [2:22]
Khan Academy
Khan Academy: Rotational Version of Newton's Second Law
David explains moment of inertia and the rotational version of Newton's second law and shows how to solve an example problem. [13:56]
Khan Academy
Khan Academy: More on Moment of Inertia
In this video David explains more about what moment of inertia means, as well as giving the moments of inertia for commonly shaped objects. [14:58]
Sophia Learning
Sophia: Forms of Rotational Inertia
This lesson provides mathematical relationships for the rotational inertia of some commonly used objects.