Kast
English description:
Demonstration of the free fall combined with a constant horizontal velocityDanish Instrument Inventory text:
Projectile trolley. Demonstration of the free fall combined with a constant horizontal velocity. Mahogany platform L360 on 4 mahogany wheels Dia147. On the platform is a brass cup in which an ivory ball Dia40 can be placed. By a powerful leaf spring this can be ejected vertically upwards. The spring is released by a mechanism underneath the platform and initiated when passing an obstacle. The drive to the trolley is a spring mechanism under the platform, pulling a cord winding round a conical pulley, so as to change the driving force as the spring power deminishes. By constant velocity the ball should return to the cup after having been ejected.Ref: Van Marum p 155 fig 40 and 41.Not signedc1800 (g)
- Category: Mechanics
- Hauch number: A62
- Inventory number: 3250
- Danish Instrument Inventory number: 1547
- Hauch references:
- Begynd.grund: §107
- Cabinet 1: 1053 7,06
- Literature:
- Nollet, J. A.: 2,05313
- Martinus van Marum: 41
- The King George III Collection: M76
