How does the force required to lift an object in water compare to the force needed to lift the same object on land?

it is the exactly the same for the same object.
it can be either greater or less, depending on the object.
it is more.
it is less.

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?