Where On Earth Do You Weigh The Least?

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You may have heard that a kilogram of feathers weighs the same as a kilogram of steel, but that all depends on where you weigh them. This video is all about the difference between mass and weight, and how weirdly awesome Earth’s gravity really is.

REFERENCES:
https://en.wikipedia.org/wiki/Mass_versus_weight
http://curious.astro.cornell.e....du/about-us/42-our-s
https://en.wikipedia.org/wiki/Equatorial_bulge
http://www.cleonis.nl/physics/....phys256/equatorial_b
https://en.wikipedia.org/wiki/Geoid
https://gracefo.jpl.nasa.gov/
http://www2.csr.utexas.edu/gra....ce/publications/fact

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It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D.
Director: Joe Nicolosi
Researcher: Matt Caplan, Ph.D.
Creative Director: David Schulte
Editors/animators: Derek Borsheim
Executive Producer: Amanda Fox
Producer: Stephanie Noone

Produced by PBS Digital Studios
Music via APM
Stock images from Shutterstock http://www.shutterstock.com