 #1
 24
 9
 Homework Statement:

Given the system described in the picture, find the acceleration of every mass using:
a) Newton's equations
b) D'Alembert's principle
Note: Pulley's masses are negligible.
 Relevant Equations:
 [tex] \displaystyle\sum_{i=1}^N (m_i \ddot r_i  F_i) \delta r_i = 0 [/tex]
This is the problem's picture:
My problem is that what I got for one acceleration (m_{3}'s) via Newton's equations is not the same as via D'Alembert's principle (I've checked on my PC if they are the same expression).
I can't find the mistake. Any suggestion is welcome.
I attach pictures of what I did:
Thank you!
My problem is that what I got for one acceleration (m_{3}'s) via Newton's equations is not the same as via D'Alembert's principle (I've checked on my PC if they are the same expression).
I can't find the mistake. Any suggestion is welcome.
I attach pictures of what I did:
Thank you!
Last edited: