With what acceleration 2m will move?

[kaspis245]

Homework Statement

A system of pulleys is given. I need to find with what acceleration mass m₂ will move.

Homework Equations

Newton's laws of motion.

The Attempt at a Solution

Is it right?

 

[robphy]

As a check, plug in your result of a=-g back into your Newton-Law equations to get expressions for T1 and for T2.
Are those results consistent with what you claim about how T1 and T2 are related?

Are the a's the same for the two objects? Can you justify your answer?

 

[kaspis245]

I thing it's incorrect. How should I solve it?

 

[SammyS]

Homework Statement

A system of pulleys is given. I need to find with what acceleration mass m₂ will move.
[IMG ]http://s7.postimg.org/483jmjjdn/Untitled.png[/PLAIN]

Homework Equations

Newton's laws of motion.

The Attempt at a Solution

[IMG ]http://s3.postimg.org/lya41d7pf/uzduotis.jpg[/PLAIN]

Is it right?

What is the complete statement of the problem?

Can we ignore the rotational inertia of the pulleys? How about the mass of the pulleys? It looks as if one of them has mass, m .