Aspring has one end firmly attached to a wall and the other end attached to a mass. the mass can slide freely on a smooth, horizontal surface with no friction. when the mass is at the equilibrium position, what is true about the spring?
a. the spring is compressed by a maximum amount.
b. the spring is neither stretched nor compressed.
c. the spring is stretched by a maximum amount.
d. the spring is stretched or compressed by an amount greater than zero
e. i don't know yet.
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