Bronze Ball

Anyone there who knows resistant materials? Why I might not use concealed hinges, ball bearing hinges etc? ?

hi
i need help with my resistant materials hwk but i dnt know why i might not use:
- concealed hinges
- ball bearing hinges
- bronze flush hinges
- egress friction hinge slide
- Gate hinge
- Lift off hinge
could anyone please help me? thanks
im really struggling
thanks

i don't understand your question, sorry