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Unformatted text preview: water V disp g = m iron g = iron V iron g ). This means that the water displaced is V disp = iron water V iron . After the iron is thrown overboard, the volume of water displaced is equal to the volume of the iron (because the iron is completely submerged). Since iron is more dense than water, iron water V iron &gt; V iron we see more water was displaced when the iron was on the boat; hence the water level was higher then also. Problems 1. A hollow spherical iron shell Foats almost completely submerged in water. The inner diameter is: d inner = 2 p 1- water iron P 1 / 3 R = 56 . 1 cm 2. A helium balloon lifts a person. The radius is: r = b 3( m + M ) 4 ( air- He ) B 1 / 3 = 2 . 8 m 3. A cubical block of wood Foats in water. 1 (a) wood = water ( 1-. 08 . 20 ) = 600 kg/m 3 (b) F = water L 2 yg where y is the distance from equilibrium. (c) T = 2 r wood L water g = 0 . 695 s 2...
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This note was uploaded on 10/05/2008 for the course PHYSICS 7A taught by Professor Lanzara during the Spring '08 term at University of California, Berkeley.
- Spring '08