dont know ans for second can u post ur approch??
No I made a mistake here ..will do correctly and send
My approach is this
@Shwetanshu_2018 Pls Check this
I didn’t take gravity into account as it’s constant force (the system will be already in its equilibrium)
All x used in below are just the extensions from equilibrium
@Sneha_2021 from where did you take this q