Calculate Acceleration & Tension of a Pulley System

[Ciaran]

Homework Statement

Three equal masses are hung from a pulley(2 on one side, 1 on the other). Find the acceleration of the system and the tension between: a) the 2 sides of the pulley and b) between the 2 masses on the same side

Homework Equations

The Attempt at a Solution

Got a= g/3, for a) T= 13.3m N and not 100% sure about b)

 

[Doc Al]

Got a= g/3, for a) T= 13.3m N

Good.

and not 100% sure about b)

What do you think? Apply Newton's 2nd law to one of those masses.

 

[Ciaran]

Is it T= 2g/3 N?

 

[Doc Al]

Is it T= 2g/3 N?

Yes, but you left out the mass.

(It's generally a good policy to show how you arrived at your answer, not just give your answer.)