Answered

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

Verified Answer :

MissPhiladelphia

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.

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

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