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Atwood's machine is a common classroom demonstration used to illustrate principles of classical mechanics. The ideal Atwood machine consists of two objects of mass m 1 and m 2, connected by an inextensible massless string over an ideal massless pulley. [1] Both masses experience uniform acceleration. When m 1 = m 2, the machine is in neutral ...
The swinging Atwood's machine (SAM) is a mechanism that resembles a simple Atwood's machine except that one of the masses is allowed to swing in a two-dimensional plane, producing a dynamical system that is chaotic for some system parameters and initial conditions.
Brunsviga 15 Mechanical Calculator Original Odhner-Arithmos-Typ-5. Brunsviga is a calculating machine company whose history goes back to 1892 with devices upgrading from mechanical to electrical thereafter. The firm Grimme & Natalis that manufactured the machines changed their name to Brunsviga Maschinenwerke A.G. in 1927.
George Atwood FRS (c. October 1745 – 11 July 1807) was an English mathematician who invented the Atwood machine for illustrating the effects of Newton's laws of motion. He was also a renowned chess player whose skill for recording many games of his own and of other players, including François-André Danican Philidor , the leading master of ...
This machine was composed of four modified Triumphator calculators. [31] [32] [33] Leslie Comrie in 1928 described how to use the Brunsviga-Dupla calculating machine as a difference engine of second-order (15-digit numbers). [28] He also noted in 1931 that National Accounting Machine Class 3000 could be used as a difference engine of sixth-order.
A partially disassembled Curta calculator, showing the digit slides and the stepped drum behind them Curta Type I calculator, top view Curta Type I calculator, bottom view. The Curta is a hand-held mechanical calculator designed by Curt Herzstark. [1] It is known for its extremely compact design: a small cylinder that fits in the palm of the hand.
This, from the section on elevators, is wrong, " it has to overcome only weight difference and inertia of the two masses." The basic principle of the Atwood Machine is that the inertia of both masses still has to be overcome. I would change it but have been topic banned in other areas and have found some editors to be rather nasty.
(Facit-Odhner was a sub-sidiary of Facit) Facit calculating machine, 1954 Elof Ericsson (1887–1961), founder in 1922 of AB Åtvidabergs Industrier. Photo from 1937. Photo from 1937. Facit ( Facit AB ) was an industrial corporation and manufacturer of office products including furniture.