asure the length of the strings (fr Idle of a ball), the distance betwe s, and the charge on each in ipu. alyze the forces acting on one of ermine the electric force between
asure the length of the strings (fr Idle of a ball), the distance betwe s, and the charge on each in ipu. alyze the forces acting on one of ermine the electric force between
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Transcribed Image Text:Determine the conversion factor between ipu and coulombs by means of the following steps:
1. Hold the tops of the strings together so that the balls hang
as shown at right.
2. Measure the length of the strings (from hanging point to the
middle of a ball), the distance between the centers of the
balls, and the charge on each in ipu.
3. Analyze the forces acting on one of the balls, and
determine the electric force between the balls, in newtons.
The mass of the pith balls has been measured for you and is
0.5 g.
The charged pith balls
repel one another.
4. Use Coulomb's law, and the fact that you know the relative
sizes of the two charges (from the electrometer measurement), to determine the amount
of charge in coulombs on each of the balls.
5. Finally, determine the conversion factor between ipu and coulombs.
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