How Do You Calculate Tension in a Pulley System with Two Masses?

[tsurugi-ijin]

Homework Statement

Sorry to be posting here but trying to look for previous similar questions I just managed to baffle me further!
This is just me trying to revise and came across this..

Two masses of 10 kg and 5 kg are joined by a cable and placed over a massless frictionless pulley as shown in the diagram. Find the Tension.

Homework Equations

F= ma

The Attempt at a Solution

Mass A = 10kg x gravity
= 98.1 N

Mass B = 49.05 N

So I end up getting the tension above B as 49.05 from 98.1 - 49.05..

Know that isn't right..
Any help would be brilliant

 

[gneill]

Homework Statement

Sorry to be posting here but trying to look for previous similar questions I just managed to baffle me further!
This is just me trying to revise and came across this..

Two masses of 10 kg and 5 kg are joined by a cable and placed over a massless frictionless pulley as shown in the diagram. Find the Tension.

Homework Equations

F= ma

The Attempt at a Solution

Mass A = 10kg x gravity
= 98.1 N

Mass B = 49.05 N

So I end up getting the tension above B as 49.05 from 98.1 - 49.05..

Know that isn't right..
Any help would be brilliant

Draw a Free Body Diagram for each mass. Write an expression for the acceleration of each mass from the FBD (should include a term for the tension in each case). Solve the equations.