3B Scientific Set of 5 Density Bodies - Manual (Page 3)

3B SCIENTIFIC® PHYSICS
1
Set of Five Blocks of Various Densities U8404556
Instruction Sheet
04/08 ALF
1 Sample block - copper
2 Sample block - iron
3 Sample block - aluminium
4 Sample block - brass
5 Sample block - wood
6 Hollow body
1. Description
The set of five blocks of various densities is used to
determine the densities of different materials and
to demonstrate Archimedes’ principle.
The set consists of five sample blocks of different
materials with identical dimensions plus a
transparent hollow body with internal volume
equal to that of the sample blocks and a loop
attached for suspending it. The sample blocks are
provided with 2 mm holes for suspending them.
2. Technical data
Materials: Wood, aluminium,
iron, brass, copper
Dimensions of each block: 10
Ч 20 Ч 45 mm 3
3. Experiment procedure
3.1 Determining densities of solid bodies
The following additional equipment is needed for
determining the densities:
1 Electronic balance, 200 g (230 V, 50/60 Hz)
U42048-230
or
1 Electronic balance, 200 g (115 V, 50/60 Hz)
U42048-115
1 Vernier calliper, 150mm U10071
1 Beaker, low shape, from set U14210
3.1.1 Determining density by weighing and
calculating the volume
• Measure the dimensions of the blocks using
the Vernier calliper and calculate the volume.
• Determine the mass m by weighing.
• Calculate the densities of the samples
according to the formula:
V
m
= ρ .
Note:
The 2 mm holes introduce an error and for precise
determination that must be taken into account in
the calculation.
3.1.2 Determining density by measuring the
buoyant force
• Push about 20 cm of nylon thread through a
hole in the sample block and tie the ends to
make a loop.