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Math·Advanced Math·Nonlinear functions

easy

The elastic potential energy E, in newton-meters, stored in a spring is the product of 1/2 the spring constant, in newtons per meter, and the square of the number of meters, x, the spring is stretched from its equilibrium position. If the spring constant for a certain spring is 74 newtons per meter, which equation gives the elastic potential energy, in newton-meters, stored in this spring in terms of the number of meters the spring is stretched from its equilibrium position?

A

E = 148x

B

E = $148x^2$

C

E = 37x

D

E = $37x^2$