Answer: 0.5 m
Step-by-step explanation:
Given
Mass of the person is

Trampoline launches the person into the air up to height of

Force experience by springs is

Here, the work done on displacing the springs is equivalent to the Potential energy acquired by the person i.e.
![\Rightarrow F\cdot x=mgh\quad [\text{x=displacement of the trampoline}]\\\\\text{Insert the values}\\\\\Rightarrow x=(50* 9.8* 2)/(1960)\\\\\Rightarrow x=(980)/(1960)\\\\\Rightarrow x=0.5\ m](https://img.qammunity.org/2022/formulas/physics/high-school/1q7bedh6dxotrgmj3ubymsnseks1rdpety.png)