GCSE physics

You can get the original weight by grabbing the initial extension from that energy and then using $|\vec{f}|=k|\vec{x}|$.

Then just use the additional weight and recalculate $|\vec{x}|$.

May I know how you manage to write equations on TSR, kind sir? I’ve been trying to figure that out since ages.

I only found out recently but TSR has a LaTeX environment.

You start it with a (latex) and end with a (/latex),replace with [] SQUARE Parentheses.

It's odd that you need a / and not a \ to end it imo, but that's how it is.

Then it's just the standard latex way of writing equations (TSR has a page but I can't link cuz in bed.. Try to Google 'TSR LaTeX')