The energy of a spring-mass system is 25.0 J when the maximum displacement is 10.0 cm. If the mass is doubled with the same maximum displacement, the energy of the system is
A) 12.5 J.
B) 17.7 J.
C) 25.0 J.
D) 35.4 J.

Question

Quizplus · Accepted Answer

The energy stored in a spring-mass system at maximum displacement is given by the formula $E = \frac{1}{2}kx^2$, where $E$ is the energy, $k$ is the spring constant, and $x$ is the displacement. Doubling the mass does not affect the spring constant or the displacement, so the energy remains the same.

The Energy of a Spring-Mass System Is 25