Buoyancy and Density Determination · PhysicsBowl 2015 #30

Physics · fluid-mechanics

Problem

A spring scale reads 2.50 NN when a small solid mass hangs from it in air. The spring scale reads 1.58 NN when the mass at the end of the spring is completely submerged in a container of water. Which one of the following choices best represents the density of the solid mass? (A) 3.68×103kgm33.68×10^3 \frac{kg}{m^3} (B) 2.72×103kgm32.72×10^3 \frac{kg}{m^3} (C) 1.58×103kgm31.58×10^3 \frac{kg}{m^3} (D) 9.20×102kgm39.20×10^2 \frac{kg}{m^3} (E) 1.58×102kgm31.58×10^2 \frac{kg}{m^3}

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