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Atwood's machine is a device invented in 1784 by the English physicist Rev. George Atwood. (See Fig. \(\PageIndex{1}\) ) The purpose of the device is to permit an accurate measurement the acceleration due to gravity \(g\).
An Atwood's machine (two masses connected by a string that stretches over a pulley) and a modified version of the Atwood's machine (one of the masses is on a horizontal surface) can be explored.
The solution to any two-body problem (including Atwood's Machine problems) will typically include two analyses: A System Analysis: Used to determine the acceleration. An Individual Object Analysis: Used to determine an “internal force”. Straightening the System.
m 1 g = N. m 2 g = N. The acceleration is. a = m/s². and the tension is. T = N. Change any of the mass or weight values and the resulting acceleration and tension values will be calculated. Index. Newton's laws.
Atwood Machine. Equipment: Pulley. 2 Masses of different weights (~200g-1kg) Pegboard. Waxed string (this helps prevent the string from slipping off the pulley) Demo: This is a commonly used apparatus to demonstrate the principles arising from classical mechanics.
31.4 Worked Example - Atwood Machine. Instructor: Dr. Peter Dourmashkin. If playback doesn't begin shortly, try restarting your device. Videos you watch may be added to the TV's watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. Beginning of dialog window.
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 .
