PBS
Pbs Learning Media: Gravity at Earth's Center
In this video segment from NOVA scienceNOW, learn about the effects of gravity as astrophysicist Neil deGrasse Tyson falls through a virtual hole through Earth's center. [1:45]
NASA
Nasa: Weight and Balance: Lesson 2
This video shows how the center of gravity on an airplane is determined, where it is located, and why it's important for maintaining balance. Watch as computers on the aircraft redistribute weight of fuel on an airplane to help maintain...
Khan Academy
Khan Academy: Torque, Moments and Angular Momentum: Center of Mass
An introduction to the center of mass. [9:35]
Smithsonian Institution
Smithsonian Science Education Center: Falling 101
Kids have many ideas about how and why things fall based on their daily life experiences. However, many of these ideas are misconstrued. Learn from this video how to clear up these misunderstandings about gravity and help your students...
Other
You Tube: Sky Marvels Earth Moon Barycenter
EARTH'S AND MOON'S CENTER OF GRAVITY - Though we often say that the Moon orbits our Earth, it is more accurate to say that both actually orbit their common center of mass-a point known as the "Earth-Moon barycenter.
National Science Foundation
National Science Foundation: Science of Speed: Load Transfer
The corners of a NASCAR track are divided into three parts because the car's grip changes in different parts of the turn. A race crew must try to minimize load transfer by making adjustments based on a car's centre of gravity. [5:05]
Khan Academy
Khan Academy: Gravitation: Introduction to Newton's Law of Gravitation
Do you know how much you are accelerating down toward the center of Earth? This video will explore how to use Newton's Law of Gravitation to figure it out. [8:37]
Bozeman Science
Bozeman Science: Gravitational Field Strength
Find out how the gravitational field strength is directly related to the mass of the object and indirectly related to the square of the distance from the center of mass. [5:38]
Khan Academy
Khan Academy: Normal Force: Normal Force and Contact Force
A discussion of the force that keeps a block of ice from falling towards the center of the Earth. The example problem has two 5-kg blocks of ice on the surface of a frozen lake, one stationary and one moving at a constant velocity. [7:18]
Bozeman Science
Bozeman Science: Gravitational Forces
Award-winning science teacher Paul Andersen helps make physics understandable as he explains how gravitational forces differ from the other three fundamental forces: electromagnetic, and strong and weak nuclear forces. [5:05]
Science for Kids
Science Kids: Sports Videos: Basketball Hang Time
Do some athletes have the ability to hang in the air longer than other people? Watch to see whether hang time really exists and how the mechanics of jumping work. [6:27]
National Science Foundation
National Science Foundation: Science of Speed: Balance
Getting the right balance in a race car is difficult because the weight of the fuel changes as the fuel burns off, and the tires wear down during each green-flag run. [5:16]
Sophia Learning
Sophia: Stable vs. Unstable
A narrated screencast explains the concept of stability in objects. [3:16]
Massachusetts Institute of Technology
Mit: Blossoms: Uniform Circular Motion and Centrifugal Force
The objective of this video lesson is to correct the misconception in the students' understanding of centrifugal force. The lesson will work to clarify this misconception by using Newton's three laws of motion, particularly the law of...
PBS
Pbs Teachers:circus Stunts
Discover what people can do to help them balance on a tightrope. Watch three kids use the scientific method to learn how a pole helps balancing on a high wire.
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