Measurement of Mass, Volume, and Density through
The purpose of this experiment was to measure the density of a solid and a liquid using Archimedes principle. Archimedes is one of the greatest inventors and mathematicians of all time. The principle we used in this experiment was discovered when Archimedes stepped into a full bath tub. Using Archimedes principle, we were able to determine the density of a lead rod, water, and an unknown liquid.
| MW (g/mol)
| ρ (g/cm3)
| bp (˚C)
| mp (˚C)
| 18.01 g/mol
| 1 g/cm3
| 100 ˚C
| 0 ˚C
| 207.2 g/mol
| 11.34 g/cm3
Spring ConstantF=-kxThe equation was used to calculate the spring constant of spring i.
| Densityρ=massvolumeThis equation was used to calculate the density of an object.
| Buoyant ForceB=Δmg=ρf VobjgThis equation was used to calculate the buoyant force of an object.
| Experimental Procedure:
ProcedureA: * Setup similar to the spring constant lab * Use the same or a similar spring from the spring constant lab * Find the spring constant of the smallest spring used from previous lab if not already foundB: * Use the same metal rod from the Error of Propagation experiment and attach it to the bottom of the spring * Fully submerged the metal rod in a beaker of water * Record the displacement of the submerged object * Repeat several times making sure the object is fully submerged and steadyC: * Dry the object and then repeat part B with an unknown liquid
| Observations * Used spring i. We worked with a different group so we used their spring with their known spring constant. * Used an iron rod, which is what the group we worked with used before. * Starting volume decreased after the first trial * Displacement in the unknown liquid was very similar to that of water
Spring constant: k=0.023 N/m
This was received from the group we worked with.
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