An object has a weight of 8N in air. However, it apparently weighs only 4N when...
An object has a weight of 8N in air. However, it apparently weighs only 4N when it is completely submerged in water. What is the density of the object?
Homework Answers
buoyant force
Fb = 8 - 4 = 4 N
1000* V * 9.8 = 4
V = 0.000408 m^3
as we also know that
8 - 4 = V g ( sigma - rho)
4 = 0.000408* 9.8* ( sigma - 1000)
sigma = 2000.4 kg/m^3
========
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