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Flipping Physics
Merry-Go-Round - Conservation of Angular Momentum Problem
A 25 kg child is sitting on the edge of a merry-go-round. The merry-go-round has a mass of 255 kg and is rotating at 2.0 radians per second. The child crawls to the middle of the merry-go-round. What is the final angular speed of the...
Flipping Physics
What is the Maximum Speed of a Car at the Top of a Hill?
What is the maximum linear speed a car can move over the top of a semi-circular hill without its tires lifting off the ground? The radius of the hill is 1.8 meters.
Flipping Physics
Force of Impact Equation Derivation
Rearranging Newton’s Second Law to derive the force of impact equation.
Flipping Physics
Common Point Particle Angular Momentum Triangle
The #AngularMomentum of a #PointParticle moving at a constant velocity is shown to be constant.
Flipping Physics
Mints on a Rotating Turntable - Determining the Static Coefficient of Friction
A turntable is turning 45 revolutions per minute. Mints are located 0.030 m, 0.080 m, and 0.130 m from the center of the record. Determine what you can about the coefficient of static friction between the turntable and the mints.
Flipping Physics
(Energy Solution) Acceleration of a Wheel descending on a Rope
A rope is wrapped around a bicycle wheel with a rotational inertia of 0.68MR^2. The wheel is released from rest and allowed to descend without slipping as the rope unwinds from the wheel. In terms of g, determine the acceleration of the...
Flipping Physics
2D Conservation of Momentum using Air Hockey Discs and Unit Vectors
A 28.8 g yellow air hockey disc elastically strikes a 26.9 g stationary red air hockey disc. If the velocity of the yellow disc before the collision is 33.6 i cm/s and after the collision it is [4.79 i - 9.57 j] cm/s, what is the...
Flipping Physics
Center of Mass by Integration (Rigid Objects with Shape)
Flipping Physics
Impulse Comparison of Three Different Demonstrations
A racquetball is dropped on to three different substances from the same height above each: water, soil, and wood. Rank the _______ during the collision with each substance in order from least to most. (a) Impulse. (b) Average Force of...
Flipping Physics
Dart with Thin Rod Collision - Conservation of Angular Momentum Demonstration and Problem
A 5.3 g dart is moving vertically at 16.5 m/s just before it collides with and sticks to a 33.9 cm long, thin piece of cardboard. If the dart hits the 71.8 g piece of cardboard 28.7 cm from its fixed end, to what maximum angle does the...
Flipping Physics
Introductory Conservation of Mechanical Energy Problem using a Trebuchet
Learn how to use the Conservation of Mechanical Energy equation by solving a trebuchet problem.
Flipping Physics
Introductory Centripetal Force Problem - Car over a Hill
A 453 g toy car moving at 1.05 m/s is going over a semi-circular hill with a radius of 1.8 m. When the car is at the top of the hill, what is the magnitude of the force from the ground on the car?
Flipping Physics
Analyzing Water in a Bucket Revolving in a Vertical Circle
Analyzing the forces acting on a bucket of water which is revolving in a vertical circle.
Flipping Physics
How Much is a Mermaid Attracted to a Doughnut?
How Much is a Mermaid Attracted to a Doughnut? A practical, everyday example of Newton’s Universal Law of Gravitation.
Flipping Physics
Determining the Force Normal on a Toy Car moving up a Curved Hill
A 0.453 kg toy car moving at 1.15 m/s is going up a semi-circular hill with a radius of 0.89 m. When the hill makes an angle of 32° with the horizontal, what is the magnitude of the force normal on the car?
Flipping Physics
Conical Pendulum Demonstration and Problem
A conical pendulum is demonstrated and it’s angular velocity is determined.
Flipping Physics
Wheel Conservation of Angular Momentum Demonstration and Solution
A #SpinningWheel is rotated while sitting on a stool. #AngularMomentumConservation is demonstrated. And an example problem is solved.
Flipping Physics
The Force of Gravitational Attraction between the Earth and the Moon
According to NASA, the mass of the Earth is 5.97 x 10^24 kg, the mass of the Moon is 7.3 x 10^22 kg, and the mean distance between the Earth and the Moon is 3.84 x 10^8 m. What is the force of gravitational attraction between the Earth...
Flipping Physics
Harnessing the Power of Spreadsheets in Physics
Basic demonstration of how to use spreadsheets in an introductory physics class.
Catalyst University
AC Joint Test Item Cluster | Rationale & Interpretation
In this video, I explain and demonstrate the special tests of the AC joint test item cluster. More specifically, we cover the rationale, interpretation of results, and psychometric properties for these tests: [1] Cross-body ADDuction...
Flipping Physics
Minimum Speed for Water in a Bucket Revolving in a Vertical Circle
What is the minimum angular speed necessary to keep water in a vertically revolving bucket? The rope radius is 0.77 m.
Weatherthings
Hands on Weather - Heat
Three simple weather demonstrations you can do at home or at school to show the properties of heat, using your hands and everyday materials.
Flipping Physics
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?
Flipping Physics
Calculating the Force of Impact when Stepping off a Wall
A 73 kg mr.p steps off a 73.2 cm high wall. If mr.p bends his knees such that he stops his downward motion and the time during the collision is 0.28 seconds, what is the force of impact caused by the ground on mr.p?