Concept
Demonstrates how the fluid surrounding an object exerts a buoyant force on the object, decreasing its weight, by first weighing an object in air, then in water.
Procedure
- Assemble the tripod, Al rod, scale, and rod clamps (see picture).
- Stack the two lab jacks and put the glass beaker on top.
- Add 500 – 600 ml of water. Do not put more water, or it will spill when the block will be submerged.
- Hang the acrylic block on the scale and note its mass.
- Using the two lab jacks, start raising the beaker with water until the block is fully submerged.
- Note the submerged block weight.
Equipment
- Heavy ringstand
- (2) 1" Rod clamp
- 24" Aluminum rod
- (2) Lab jack
- 2000-ml glass beaker
- 22N scale
- 1.45kg acrylic block
- Jug of water