Airplane overwing exit doors come in two types. The ones that you fully detach and throw out, which weigh less than the average passenger's suitcase [1]. The larger and heavier ones are spring-assisted so you can literally open them with one hand while seated [2].
[1] https://youtu.be/RCFzEg-t_Bk?si=xACVKqIvakrrJnaT at 0:25
[2] https://youtu.be/ZW4xaHN1otE?si=rr0kHUzrRSXJY3Pr at 0:20