How to calculate acceleration in this Atwood's Machine?

[ArnavVarshney]

Homework Statement

Question: https://i.stack.imgur.com/xYp18.jpg

It asks us to find the acceleration of block B.

Relevant Equations

String constraint?

I concluded the net force on block B would be (300-3T) where T is the tension in the string and similarly, on block A it would be 2T. However, the answer I get (1.71) is incorrect. The correct answer is 1.56.
Could someone guide me to the solution of the question.
Sincere Thanks!

 

[Gaussian97]

Show us your calculations to be able to tell you what you did wrong.

 

[Chestermiller]

Problem Statement: Question: https://i.stack.imgur.com/xYp18.jpg

It asks us to find the acceleration of block B.
Relevant Equations: String constraint?

I concluded the net force on block B would be (300-3T) where T is the tension in the string and similarly, on block A it would be 2T. However, the answer I get (1.71) is incorrect. The correct answer is 1.56.
Could someone guide me to the solution of the question.
Sincere Thanks!

How does the acceleration of A compare to the acceleration of B?

 

[ArnavVarshney]

How does the acceleration of A compare to the acceleration of B?

By string constraint, work done by tension would be zero. So, -3T(aB) + 2T(aA) = 0.
2aA = 3aB?

 

[ArnavVarshney]

How does the acceleration of A compare to the acceleration of B?

Done! Thanks a lot! Was missing out on the fact that the two would have different accelerations!