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March 30, 2015

March 30, 2015

Posted by **maria** on Wednesday, October 26, 2011 at 8:46am.

How many balls are required to float the ship?

- physics -
**drwls**, Wednesday, October 26, 2011 at 9:15amThe amount of mass that each ball will lift is (in grams)

Pwater*V - Mball

= 1.00 g/cm^3)*3.35*10^1 cm^3 - 2.70

= 30.8 g

The number of pingpong balls needed is 4843*10^3g/30.8 = 157,200

The density of steel does not matter. The answer depends upon the total mass that must be lifted.

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