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Free fall of bowling ball and a feather in world’s biggest vacuum chamber

Brian Cox visits NASA’s Space Power Facility in Cleveland, Ohio to see what happens when a bowling ball and a feather are dropped together under the conditions of outer space.

World’s biggest Vacuum chamber, built in 1960s.

Experiment: Take a heavy object and a light one and drop them at the same time.

Which one will fall fastest, bowling ball or the feather ?
Bowling ball will fall first because of air resistance. What if there is no air ?

In order to see the nature of the gravity we need to remove the air.

It takes 3 hours to remove the air…

Programme website: http://www.bbc.co.uk/programmes/p0276q28