Consider a situation
I'm curious why is that the massless pulley's acceleration is just the avarage of acceleration of m1 and that of m2?
Forces acting on pulley are Tc-2Ta=0 (because pulley is massless, force can't give it acceleration)
Therefore tensions are Tc=2Ta
The Attempt at a Solution
Intuitively it makes sense.But I can't find the equation that describes this relationship.[/B]