Accents on the Tu form affirmative command

[bellevueace]

Can anyone give a general rule on the placement of accents when using the Tu form affirmative command when adding a pronoun? I know why the accents are used but the placement seems to vary according to the verb in use. Thanks.

[Trellum]

As far as I know ''Tú'' is always used when next to a verb, but ''tu'' is used to refer to someone's belongings an such, like for example:  ''Ese es tu bolso'' or ''tu opinión''.  

[fcuco]

Think in terms of Your and You:

This is your chair: Esta es tu silla.

You are my hero: Tú eres mi héroe

In theory, and probably in ancient Spanish this was true, the pronunciation was different, nowadays you simply add the accent to differentiate two words that look the same but have different meanings.

[ILoveOrangeSoda]

Everytime you see tú it refers to the pronoun you. Tu is used when you refer to the possesive of that person, as in your. 

The difference between tú and tu, is the same as the difference between you and your. 

For instance see this sentence I just made up :

Tú tienes un gran futuro por delante, y la publicación de tu libro lo demuestra.

In 

[lingvo]

"Tú" is a second person subject. "Tu" is a possessive pronoun.

Tú is you, not any way to make a confusion out of it.

Tu is your, as simply as that.