What is the portrait mode

Explanation:

When your elecronic devices screen is positioned upright or the way a photo is taken

If you want an example look up portrait mode on go0gle or safar1

only #2 represents an object at rest on a table.

in #1, there is no normal force due to the table; the object is accelerating downward.

in #3, the vertical forces are not balanced; the object is accelerating downward.

in #4, neither the vertical nor the horizontal forces are balanced. the object is accelerating upwards and to the right.