Archimedes Principle Experiment Report

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S Nengola University of Witwatersrand 1116515 EXPERIMENT: MEASUREMENT OF DENSITY Aim The aim of the experiment was to determine unknown densities of several rock types by using Archimedes Principle and comparing these results with other measured values. Apparatus The following apparatus where used Five solid rock samples Mass balance Thread Pin Cooler box full of water Theory When an object is immersed in a fluid, the fluid exerts an upward buoyant force equal to the weight of the fluid displaced by the object. Weight and volume play a crucial role in determining if an object will float in a given fluid which relates to density (mass per unit volume) (Lima, 2011). The apparent weight of an object will be less if suspended in water compared to its weight in air, the difference in the two masses in grams is approximately the same as milliliters, by dividing the mass of the object in air by the difference between its mass in air and its mass suspended in water, density is obtained (Anon., 2015).…show more content…
When an object is submerged in water the buoyant force is F_b in the opposite direction of gravitational force Figure 1: Describes Archimedes principle of a solid object in water http://www.physics.rutgers.edu/ugrad/161/LabwmcorManualsPDF/DensityArchimedes/wm11corDensityArchimedesPrinciple.pdf F_b = ρ_water V_solid×g g=gravitational field, ρ_water = density of object M_(solid in water)=ρ_water × V_solid ρ_water=density of water , V_solid =volume of

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