A closed vessel contains liquid and a small gas bubble. The vessel is accelerated vertically upward with acceleration a. Which statements are correct?

Select all that apply

• Option A

  Effective gravity is g+a downward

• Option B

  Pressure gradient magnitude becomes ρ(g+a)

• Option C

  The buoyant force on the bubble increases compared with the non-accelerating case

• Option D

  If a=g downward, the hydrostatic pressure gradient becomes zero