How to find the tension using the F=ma formula

[blue__boy]

A 4.0 kg and 6.0 kg masses are connected by a string over a pulley. What is the tension in the String?

I have no idea how to find the tension using the F=ma formula

Can someone please help me?
Please also explain tension in terms of the word meaning in Physics.

Thank you very much!

 

[hage567]

Is that the entire question?

There are two forces acting on each mass. The force of gravity downwards, and the force (tension) in the string that is pulling upwards.

See if this helps at all: http://hyperphysics.phy-astr.gsu.edu/hbase/atwd.html#cl

 

[blue__boy]

Your reply really helps me!
Thank you very much! =)