Answer:
Restoring force of the spring is 50 N.
Step-by-step explanation:
Given that,
Spring constant of the spring, k = 100 N/m
Stretching in the spring, x = 0.5 m
We need to find the restoring force of the spring. It can be calculated using Hooke's law as "the force on a spring varies directly with the distance that it is stretched".
![F=kx](https://img.qammunity.org/2020/formulas/physics/high-school/ivnw6jqhdmurxa3c0z25q7hl9zxvo5d7qf.png)
![F=100\ N/m* 0.5\ m](https://img.qammunity.org/2020/formulas/physics/high-school/pom0m7yacn8o7fad87p50dtovibqo1kdax.png)
F = 50 N
So, the restoring force of the spring is 50 N. Hence, this is the required solution.