Hood problems

How much pressure does it take for one of those hinges to fold? Before I had the hood on I was messing around trying to get it to pivot and it wouldnt budge, I had almost all of my weight on it before I gave up, I weigh about 165. Im thinking now that they might be stuck, the hood was not on the car when I got it so I never saw those hinges in use. they were thrown in the trunk.