/ʊ/

To make a /ʊ/ sound, round your lips and relax your tongue and mouth. The difference in duration between being followed by a voiced or unvoiced syllable is tiny or non-existent.

Video Script
To make an /ʊ/ sound, leave your lips fairly close together and raise your tongue at the back. Let’s look at some examples before a voiceless consonant: shook push cushion butcher look cookie brook. And some examples where it comes before a voiced consonant: woman sugar wool whole hood wolf would And in some sentences: The woman shook the push cushion. A butcher looked at the sugar cookie. If you’d like some more practice, look below the video.