Determination of the Gravitational Constant Manufacturer,Supplier and Exporter in India
Product Code : JA-PWL-9166
The Determination of the Gravitational Constant apparatus (SKU JA-PWL-9166) is a torsion balance for demonstrating the gravitational force between two masses and measuring the gravitational constant. A light bar with two small lead spheres hangs horizontally from a thin tungsten wire, and two large lead spheres are swung into position to attract them. A capacitive differential sensor records the rotation for export to a spreadsheet, and the constant can be found within a single lesson to better than 10%. It is supplied by JaincoLab for college physics laboratories.
Specifications
The torsion balance has an angular resolution of 25 microradians, a 25 micron tungsten torsion wire, an oscillation period of 2-4 minutes, sampling at 0.5-10 samples/s, 1 kg large and 15 g small lead spheres, a weight of 5 kg and dimensions of 190 x 180 x 200 mm.
| Product | Determination of the Gravitational Constant |
| SKU | JA-PWL-9166 |
| Principle | Torsion pendulum with small and large lead spheres |
| Angular resolution | 25 microradians |
| Torsion wire | Tungsten, 25 micron |
| Period of oscillation | 2-4 minutes |
| Sampling rate | 0.5, 1, 2, 5, 10 samples/s |
| Large lead spheres | 1 kg |
| Small lead spheres | 15 g |
| Gravitational attraction | Less than 10^-9 N |
| Weight | 5 kg |
| Dimensions | 190 x 180 x 200 mm |
Experiments with the gravitational constant apparatus
Students move the large spheres to a new position, record the new rest position of the torsion balance with the sensor or a light pointer, and calculate the gravitational constant from the deflection and period.
- Measuring the universal gravitational constant
- Demonstrating gravitational attraction between laboratory masses
- Torsion pendulum period and torsion constant
- Data export and analysis in a spreadsheet
- Advanced mechanics practicals in B.Sc and M.Sc physics
Scope of supply and ordering
This listing covers the torsion balance apparatus with small and large lead spheres and the capacitive sensor as described. The computer, light pointer and any interface cable are confirmed on the quotation.
Frequently asked questions
How accurate is the measurement?
The gravitational constant can be found within a single lesson to better than 10%.
How is the rotation measured?
With a capacitive differential sensor, or shown with a light pointer; data can be exported to a spreadsheet.
What are the sphere masses?
1 kg for the large lead spheres and 15 g for the small ones.
Related products
More physics and training laboratory apparatus is listed in the training workshop labs range from JaincoLab.
Request a quote
Send an enquiry for the Determination of the Gravitational Constant (SKU JA-PWL-9166) with the quantity and delivery destination using the JaincoLab contact page or by email to [email protected]. Buying under a laboratory tender? Use our tenders page.
