Question

If a spring stores 20 J of energy when it's compressed by 0.4m, what is the spring constant of the spring?

A.) 50 N/m
B.) 500 N/m
C.) 2500 N/m
D.) 250 N/m

Answer 1

D) 250 N/m is the spring constant of the spring

Answer 2

The force of a spring is calculated as F = -kx.

where F is the force exerted on the spring, k is the spring constant and x is the displacement of the spring.

20 = k (0.4)
k = 50 N/m

OPTION A is the answer.