What is the potential energy of a spring that is compressed 0.65 m by a 25 kg block if the spring constant is 95 N/m?

1.6 J

7.9 J

15 J

20 J

Answer:20 joules

Explanation:

elastic constant (k) = 95 N/m

extension (e) = 0.65m

potential energy = (k x e^2) / 2

potential energy = (95 x (0.65) ^2) / 2 potential energy = (95x0.65x0.65) / 2

potential energy=40.1375/2

Elastic potential energy=20.06875

Elastic potential energy is approximately 20 joules