a revolute joint can be static ( like a nail pinned on a wall ) or moving (like a car and its rotating wheels)
static revolute joint:create 1 body (square, circle, image or text) , create the revolute joint on the body you just created, adjust positions of body and/or revolute joint ( they'll remain connected even if not overlapping) press play !
moving revolute joint:create 2 overlapping bodies (square, circle, image or text) , create the revolute joint on the overlapping area adjust positions... press play !
Revolute joint can be a rotating motor: check the "specific" parameters.
Why don't you try posting one?
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