Support structure for triple beam balance for weighing hanging objects
The story is told that the Greek mathematician Archimedes liked to lounge around in his bath all day. He would work out his geometric proofs on his stomach (he was quite fat) writing with bath oil. One day when he was contemplating why things floated, the idea, which has become known as Archimedes' Principle, occurred to him. He became so excited by his discovery that he jumped out of his bath and ran through the streets of his town shouting "Eureka" which is Greek for "I've found it". In this lab we will attempt to grasp some of Archimedes' excitement by rediscovering his principle.
Carefully retrieve the cup & mass. Fill the spill cup.
b) Float the cup & mass, collecting water in the cylinder.
Water displaced by floating cup & mass: ____________mL.
Which situation displaced more water?_______________
Was your prediction correct? ______________
Draw a force diagram for (a) the mass resting at the bottom of the beaker, and (b) floating at the surface. Label all forces correctly.
In which situation, (a) or (b), does the mass & cup receive more buoyant force?______________
Part 2 Determining Archimedes’ Principle
Safety : No eating or drinking in the lab while performing this procedure.Wash hands after handling the lead. The Density Cube Set consists of the following materials
aluminum (light grey color, least dense)
brass (shiny copper color)
steel (grey color, sharp edges)
lead (grey color, soft edges)
Fill the spill cup with water. Slowly lower the first object into the water, collecting the overflow in the cylinder. Record the displaced mass in Column B noting that 1mL of water has a mass of 1 gram. Repeat for all objects.
Weigh each of your objects in air and record in Column M1.
Weigh each of your objects while completely submerged in water and record in Column M2.