this question is about work in physics.?

Question

It takes 115 J of work to compress a certain spring 0.12 m.
(a) What is the force constant of this spring?
correct check mark kN/m
(b) To compress the spring an additional 0.12 m,
Calculate the work required to compress the spring this additional amount

Answer 1

The work to compress a spring is W = 0.5*k*∆x^2

In the first case, ∆x = 0.12 m, solve for k.

Use this k in the next part, but now ∆x = 0.24 m. The total work is

Wt = 0,5*k*(0.24^2). The additional work is Wt - 115J.