Friday, July 18, 2008

The balloon and the lead ball: logic problem

Two objects of the same mass (1 kg), a lead ball and a helium balloon, released at the same time will not hit the earth at the same time. Gravity is based on density.

The lead weight is falling to its density level. If left alone it would over billions of years fall to the center of the earth.

The balloon is rising to its density level.

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