Respuesta :

Answer: 200 N/m

Explanation:

The Gravitational spring energy(Us) is equal to 1/2kx^2. So we have x as .2 m and Us as 4 N. So 4 N = 1/2 * k * .2^2. So now we solve for K and get 200 N/m.

Charmber06

Answer:

20 N/m

Explanation:

4/0.2 = 20 N/m

/ = divide