Why Does A Ship Float In Water While A Needle Sinks?


3 Answers

Larry Patterson Profile
Larry Patterson answered
Objects that float weigh less than the amount of water they displace.

Archimedes Principle (from Wik)
"Any object, wholly or partly immersed in a fluid, is buoyed up by a force equal to the weight of the fluid displaced by the object."

Archimedes' principle does not consider the surface tension (capillarity) acting on the body.[2]
John Profile
John answered
A needle will float if you have the right touch to set it on the surface of the water.

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