Accession No

6138

Brief Description

demonstration model to study friction / equilibrium on an inclined plane; late 19th century / early 20th century

Origin

Maker

Class

demonstration; physics

Earliest Date

1875

Latest Date

1925

Inscription Date

Material

Metal (steel, brass); wood; rope (string)

Dimensions

Length 640mm; Height 410mm; Width 208mm

Special Collection

Provenance

Purchased from Christies, 85 Old Brompton Road, London, SW7, on or before 06/07/2007.

Inscription

Description Notes

Demonstration model to study the coefficient of friction / equilibrium on an inclined plane; late 19th century / early 20th century.

Steel frame with painted wood effect and gilt lining, with wooden plate screwed to frame containing painted scale, in cm. Horizontal scale graduated 0-50, with adjustable vertical scale graduated 0-20. Horizontal plane attached to frame on pivot at one end, with angle of horizontal plane adjustable by attachment to vertical scale with brass screw fixing. The gradient supports a twin-wheel (steel) pulley attached via string and pulley wheel to a brass square bucket, designed for weights.

Condition: Good, complete. Small white paint stain on frame.

References

Events

Description
This teaching model was designed to demonstrate the phenomenon of equilibrium established between the movement of a trolley on a variable slope against the pull of a weight suspended from the device. The angle of the slope can be varied until the trolley remains at rest, the force of gravity pulling the trolley down the slope being in equilibrium with the force pulling the trolley up the slope exerted by the weights.

06/07/2007
Created by: Joshua Nall on 06/07/2007

FM:46607