Cavendish Balance, 1L10.30
Location:
Cabinet: Mechanic (Will be permanently installed in lecture halls)
Bay: {B12}
Shelf: "1"
attachment:CavendishBalance.jpg (photo from Pasco online)
Description:
Insert description of apparatus, its component, what it is demonstrating.
Equipment:
Location
ID Number
Cavendish Balance
ME, B12, 1
1L10.30
Laser
...
...
Setup:
- Currently Setup requires a 48 hour notes before lecture. Once there installed within the room this condition maybe lifted.
- Make sure the Cavendish Torsion Balance is level on a bench or platform that has no vibration.
Cautions, Warnings, or Safety Concerns:
- The Large Masses are made of Lead and weight about 1.5Kg
- The Torsion Balance inside the Cavendish is very delicate and can break.
Demonstration: The objective of this experiment is to determine G. F = (GmM)(r^-2). Two small lead balls, each of mass m, are supported on a T-shaped form which is suspended by a fine wire to form a torsion pendulum. Large lead spheres each of mass M are placed opposite the small balls, exerting a torque on the moving system. The system is allowed to come to rest, and the equilibrium position is shown by a laser beam reflected to a scale. The large lead balls are then shifted to give a torque in the opposite direction. The approach to the new equilibrium is a damped simple harmonic motion and requires over an hour and a half to come to rest.
Insert description of demonstration, how is the demonstration preformed.
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References:
[:Demonstrations:Demonstrations]
[:Instructional:Home]