The Principal Parts of the verb to Hang are: hang hung hung.
Simple Tense: hung
Past Participle (used with auxiliary verb to Have): hung.
Today I hang an ornament on the tree.
Yesterday I hung four more ornaments.
I have always hung most of the ornaments on the tree at Christmas.
Hang is an irregular verb. It does NOT take the ending -ed in most cases.
Here are three more examples from the site http://www.k12reader.com/term/irregular-verbs/:
Hang your hat here.
John hung his hat on the hat tree.
Many have hung from the gallows of the Old West.
It is correct to say:
I hung up the phone.
She hung the laundry out to dry.
Mark’s colleagues at work hung him out to dry on the day of his big presentation.
Hang as used above is a transitive verb — it takes a Direct Object.
You have to hang something (usually somewhere): hang up the phone hang the laundry hang your coat up on a hook e.g.
Intransitive uses of hang include:
to hang out with a friend
to get hung up over something
[Slang or colloquial but still correct.]
Hanged is a special case as in to be Hanged :
He was hanged by the neck until dead.
He hanged himself in his cell.
Check out this page:https://www.englishrules.com/writing/2005/hanged-or-hung/
which states the following:
Hanged as a past tense and a past participle of hang is used in the sense of to put to death by hanging … In all other senses of the word hung is the preferred form as past tense and past participle as in I hung my childs picture above my desk.
Pictures can be hung but people are always hanged. Its an odd quirk of the English language.