Solve the all parts of given question:
Question: A tank of liquid of density is accelerating downward with an acceleration a, which is less than g. The density of the liquid is constant, and uniform. The tank is open at the top.
Part A: What is the buoyant force on a body of volume V submerged in the liquid?
Part B: What is the buoyant force on the body if the tank is falling freely?
I don't know how to get that answer. Please help.