M М.
M
15N
15 N
6N
30N
25 N
8N
8. Calculate the net forces acting on M, M and M, above
Mi Enelx= son-25n= 5n0²
M2 nelx= 151-15n = 0
y Enely &n-on = Znomis?
9. Which applies to the above masses: M1, M2, or MP Why?
Why?
M1, M2, or MBP
M2
M2
Question
Could be at rest
Has a negative acceleration
Has a positive acceleration
Has a net force of ON
Mas a net force (Fre 0)
Nas balanced forces
Could be changing direction
Has unbalanced forces
Could be moving at a constant speed

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.