Unless I got something wrong, it took only three (3) bashes with the huge door-breaker for the "mighty" gate before Minas Tirith to burst open.
Isn't it strange? Is that really how a real such gate would have behaved? Naturally, a real gate would've been smaller and weaker, but also the door-breaker and who/what is handling it would also be proportionally smaller/weaker in historic reality. So it "evens out" for this question.
Isn't three "bumps" way too few to open any door which is meant to actually stop serious intruders?
I thought they would be bumping over and over for hours and hours until eventually it could no longer resist the ever repeated heavy forces. That it would be a constant topic of discussion among those fighting, fearing that it will happen at any moment. For all that build-up (admittedly while calling it the natural weak spot of the city), it basically seems useless in practice. It surprises me that the Invisible Skeleton King didn't roll in that door-breaker from the very start.
How can such a proud and well-crafted gate give in so easily, as it was apparently not explained in any way?