The plane had engine problems and had to make a 'forced' landing in a field. [=the plane was forced to land in a field]
The pilot was 'forced to land' when one of the plane's engines caught fire.
He was 'forced' to resign from office. = He was 'forced' out of office.
(..) but he was behind me in school. I wanna get these people who did this to him. Would you like to help us? You wanna help catch the people... ...who forced your son to do a robbery and then killed him? Allegedly. Allegedly. If he was killed, he probably did something wrong. (..)2006 The Departed