How Do You Calculate Tension in a Two-Mass Pulley System?

[frosti]

Homework Statement

A 2.00 kg object placed on a frictionless, horizontal table is connected to a string that passes over a pulley and then is fastened to a hanging 8.00 kg object, as shown in the figure. Find the magnitude of the acceleration of the two objects and the tension in the string.


http://img260.imageshack.us/img260/79/tensionpg7.th.png http://g.imageshack.us/thpix.php

The Attempt at a Solution

Through calculation, I know both objects are accelerating at 7.84 m/s². Since the surface is frictionless, I assume the tension is contributed by the 8kg object accelerating downward and gravitational force. so T= 8 x (9.8+7.84) = 141.12N. Is my answer correct?

 

[frosti]

nvm, I got this. Thank you anyway.