Find Volume of Sphere Using Screw Gauge

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Experiment 2

Object:

Measure the diameter of few bearings of different sizes using screw gauge and estimate their volumes.

Apparatus:

Screw Gauges, steel ball bearings

Working Formula:

Observations: (Note: Observation tables must write on blank page)

Zero Error:

Main Scale cm	Vernier Scale div	Fractional Part cm	Zero Error cm

Quantity		Main Scale Reading (MSR) cm	Circular Scale Reading (CSR) div	Fractional Part FP = CSR x L.C cm	Total Reading TR = MSR + FP cm	Mean cm
Diameter of Sphere 1	1 2 3
Diameter of Sphere 2	1 2 3

Calculation:

As per Requirement Keep Space for calculation

Result:

Precautions:

1. Take readings very carefully
2. To avoid undue pressure on the object between studs, use ratchet and not the drum for screwing

Sources of Errors:

1. The surface of object under observation may not be smooth.
2. The fixed stud, the movable stud, the micrometer screw and the nut of the instrument may not all be coaxial.