Under Water
What force is required to hold a wooden block completely under water?
Consider a wooden block of density 700 kg/m^3 and volume 2.0 m^3. What force is required to hold it completely under water?
2 m^3 of water needs to be displaced. That water has a mass of 2,000kg. (2m^3 x 1,000kg).
From that, subtract 1,400kg. (700kg x 2m^3), = 600kg.
(600 x 9.8) = 5,880N. required to hold it under.
g used is 9.8.
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