Which statements are correct for ideal spring-mass oscillators?

Select all that apply

• Option A

  Two springs attached to opposite sides of a block contribute additively to the restoring constant.

• Option B

  For springs in series, reciprocal spring constants add.

• Option C

  A uniform spring of mass mₛ fixed at one end contributes an effective mass mₛ/3 in the standard fundamental-mode approximation.

• Option D

  The time period of a vertical spring-mass oscillator about equilibrium is independent of g.