The total energy of a frictionless mass-spring oscillator (1) is constant and (2) depends on the amplitude of the oscillations.
This makes option (3) the correct answer.
The total energy consists of kinetic energy and potential energy, which constantly interchange as the mass oscillates. The amplitude of the oscillations determines the maximum potential energy stored in the spring.
In a frictionless system, energy is conserved, and the total energy remains constant throughout the motion.
External forces, like friction, would cause the energy to dissipate, but since it's a frictionless system, the total energy is maintained.
So, the correct answer is option 3. Both of the above.
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