(Another) Physics Homework Help?
The two blocks in the figure are sliding down the incline.
What is the tension in the massless string?
Without the figure mentioned, or a much better description of what is going on, including what the friction coefficients are and the angle of the incline, there is no way to help you.
Physics is about solving carefully described problems mathematically, not providing answers to a short-sentence questions.
posted by drwls