University of Illinois Urbana-Champaign
University of Illinois at Urbana-Champaign
The Grainger College of Engineering
Physics Van
Search
Menu
Search
Home
Request a Show
Frequently Asked Questions
Ask the Van
Volunteers
Contact Us
Home
Ask the Van
Home
Ask the Van
Ask the Van Questions by Subcategories
Category
Select category
About the Physics Van
Electricity and Magnets
Everything Else
Light and Sound
Making Stuff Move
New and Exciting Physics
States of Matter and Energy
Stuff about Space
Underwater and in the Air
Subcategory
Search
Ask a Question
Making Stuff Move: Gravity
Weight of Helium Balloon
Levitating Using Gravity
Is There a net Gravitional Foce at the Center of the Earth?
Fore Free Point in Tidal Field
Increased Gravitational Field of Neutron Star
Pendulum: Gravity and Other Forces
Center of Mass Gravity
Magnetic Mass and Gravity
Long-range Gravity
Does the Sun's Gravity Decrease as it Loses Mass?
Tides, Gravity, Round Earth
How Gravitational Force Varies at Different Locations on Earth
Weight and Food
Galileo and Einstein vs. Aristotle
Balls Thrown on Earth and Moon
Falling Through Hole in Earth
Why is the Sun's Gravitational Force Less Than That of the Earth?
Planets' Different Gravity
Gravity in Space
Gravity and Curved Space
Energy and Work for Satellite
Gravity Waves and Simple Gravity
Distributing Weight
Gravity Between People
Is Gravity Time-reversible?
Why Would High Rpms be Uncomfortable in Artificial Gravity?
When do you Feel Weightless in Space?
Effect of sun and Moon on One's Weight During the Day
Weight of a Truck on a Hill
Gravitational Effects Other Than the Earth's?
Gravity: Galileo's Principle
Why Gravitational Forces are Calculated From the Centre?
How big is Gravity?
Gravity, air Resistance, Falling
Does a Black Hole Accelerate Light?
'Acceleration' due to Gravity
Newton, Kepler, Inverse-square
Would Your Weight Decrease Closer to the Center of the Earth?
Why Does Pluto Orbit the Sun?
Why Does Matter Spiral Into a Black Hole?
Magnetic Field Lines Don't Really Exist
Sudden Loss of Gravity
Speed and Gravitational Deflection
Kepler's 3d Law: Stable?
Is the Universe Spinning?
Local Equivalence of Gravity and Accelerating Frames
Negative Acceleration of Gravity
Salt Concentration vs. Water Depth
Is Gravity a Fluid?
How do Airplanes Fly?
What Newton Added About Gravity
Force, Acceleration, Gravity, and Weight
Accelerating Elevators
Kinetic Plus Potential Energy
Microscopic Gravity
Gravitational Precession
Can you Swing a Ball Around in a Horizontal Plane?
Origins of Gravity
Does Gravity Come From Heat?
Heavy Enough to Fall Through the Earth?
Rotating Space Station Story
Baumgartner's Freefall
Gravity Proven Attractive?
Weight in a Stationary Rocket
Falling Furniture
Gravity From Extreme Magnetism
Hole Through the Earth
Why Water Climbs Upward
The Two-body Gravity Problem
What Causes Atmospheric Pressure?
Magnets and Eddy Currents
Kicking a Ball Barefooted on a Space Station
Earth's Acceleration and Gravity
Gravitomagnetism
Gravity Near a Satellite
Relativisitic Falling
Effect of Gravity on Pressure
Galileo's Superposition and Bullet Trajectories
Gravitomagnetic Force
Gravity: Units and Constants
How big is Gravity in the Center of the Earth?
Earth's Spin and Gravity
Feeling Gravity?
Power Generation Using Tidal Forces
Months get Longer
Balsa Wood Fins for Bottle Rockets
Earth's Attraction: Gravity or Magnetism?
Where Does the 'g' in the Formulae 'F=mg' Come From?
Why Quantize Gravity?
Why is Only Gravity Long-range?
Escape Velocity
Magnetism and Gravity?
Gravitational Attraction
Earth Staying Slim
Does BS Weigh Less Once It's Spread?
Does Heavy Baloney Violate the Second Law?
Units of Length
Bungee Jumping and Gravity?
Two Neutrons in Gravity
Big Bang Baloney
Direction of Gravity
Does Gravity Change Between Phases?
The Dark Side of the Moon
How Anchors Work
Gravity and Galileo's Superposition
Lenz's Law: Magnets Slowed by Eddy Current
Upside Down Earth
Fluid Pressure With Acceleration
Gravity Pulls?
How do Tides Work?
King Kong vs. Galileo: are Bigger Animals Possible?
What is a Theory of Gravity and Magnetism?
Why Have Wires Sag?
Weight vs. Mass
Energy Conservation in General Relativity
Gravitational Effects on Light
Moon Orbiting the Sun
Gravitational Pull From the Sun
Weight on the Moon
Photons, Mass, Gravity, Light, Rest Mass, Invariant Mass, Energy, Momentum
Gravity From Magnetism
Gravity Bending Light
Weight on Escalator
Curved Space and Acceleration
Difference Between Weight and Mass?
Friction, Weight, Gravity
Equivalence
Do Light and Heavy Masses Fall at the Same Rate?
Galileo's Falling Balls
Astronomical Energy Conservation
Non-linear Curvature
Falling Stones
Equivalence Principle
Hope for the Future
Falling Through Earth
Gravity Basics
Levitating Weight
Mass and Gravity
Solar Powered Pump.
Speed of Gravity
Levitating Mercury?
Particle Gravity
Centripetal Acceleration
Gravity and Expansion
Space Tethers
Heavy and Light - Both Fall the Same
Speed of Gravity
Weightless...almost
Conservative Forces (Gravity)
Fun With Gravity
Falling Objects
Escape Velocity
Gravitons
Defy the law of Gravity?
Why do Planets Have Gravity
Celebrating With Guns
Can you Turn up the Gravity in This Room?
Anti Gravity?
Legs Supporting Weight While Walking
Gravity Bending Stuff
Mass on a Spring on the Moon
Falling Bullets
Balls Rolling Down the Ramp
Gravitational Pull of the Sun
Earth’s Rotation and Centripetal Acceleration
Shooting and Dropping Bullets
Dropping Coins
Gravitational and Inertial Mass
Gravity and Acceleration
Object Falling in Vacuum
Gravity and Masses
Source of Gravity
Gravity and the Spinning Earth
Gravity and Rotation
Gravity and Rotation
Earth and Apple
Gravity, Galileo, and Einstein
A Fair and Balanced Acccount of Gravity
Mass, Density, Volume
Quadrupole Gravity
Gravitational Field Variation
Which Ball Falls Fastest
Weight and Mass
How do Things Roll Down Hill?
Falling at the Same Speed
What’s the Difference Between Mass and Weight?
Artificial Gravity
Who Likes Gravity?
Gravity
How Does Gravity Affect Acceleration?
Gravitational Mass
Weight Changing Elevators
Do all Planets Have Gravity?
Gravity-Antigravity
Falling Objects
Gravity All Around Us
The Mysterious Gravitons - and Photons?
Why Gravity?
Gravity in Champaign-Urbana
Magnetism and Gravity.
Gravity vs. Magnetism
Use the Forces: Magnets and Gravity
Magnetism Minus Gravity
Gravitational Energy
Bullets Dropped and Fired
Falling in Water
General Relativity: too Hard for Us
Varying G
Lunar Tides
Elliptical Orbits
Two-Way Gravity
Weighing air Etc.
Gravitational Potential Energy.
Cosmic Questions
Billion-person Jump
Moon Work
What Does Gravity Cause?
Magnets and Gravity
Center of Earth
Simple Questions
Elliptical Orbits
What is Gravity?
Gravity in Earth