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May 17, 2021 at 9:16 vote accept Iti
May 17, 2021 at 9:10 comment added Professor Sushing Indeed. Imagine if you are carrying a box through a doorway. Provided the box is narrower than the doorway, it will fit through it, regardless of how long the box is. Only the component of the box's size parallel with the doorway determines whether the box fits- the component parallel to the direction in which you are walking through the doorway is irrelevant.
May 17, 2021 at 8:54 comment added Iti Can you please give some hint why the component of length perpendicular to the rod will determine whether the rod will pass through or not?
May 17, 2021 at 8:43 history answered Professor Sushing CC BY-SA 4.0