MEDAL GIVEN TO CORRECT ANSWER.
A spring has a spring constant of 55 N/m. How much energy is stored in the spring when it is compressed 0.3 m past its natural length?

A. 21.2 J
B. 16.5 J
C. 2.5 J
D. 8.3 J

Question

MEDAL GIVEN TO CORRECT ANSWER. 
A spring has a spring constant of 55 N/m. How much energy is stored in the spring when it is compressed 0.3 m past its natural length?

 		A.	21.2 J
 		B.	16.5 J
 		C.	2.5 J
 		D.	8.3 J

anonymous · Answer

Do you know the formula for the potential energy of the spring?

anonymous · Answer

I dont think so @AllTehMaffs

anonymous · Answer

Is this a for a calc based physics class?

anonymous · Answer

no, just regular physics 1 class. @AllTehMaffs

anonymous · Answer

K k, then we'll skip the derivation ^_^

Like how the force that a spring exerts/is exerted on is
$$F_{spring} = -kx$$
The potential energy of the spring is given by
$$U_{spring} = \frac{1}{2}kx^2$$
where k is the spring constant, and x is the displacement from equilibrium (compression/stretching).

So just pop the given values into that equation and out pops the answer ^_^

anonymous · Answer

i got C? @AllTehMaffs

anonymous · Answer

Yup yup ^_^