(i) When an object is immersed in a fluid, name the two forces acting on it. (ii) On which factor the magnitude of the upward force acting on this object depends ? (iii) When will this object sink?

(i) The two forces are gravitational force (weight) and buoyant force.
(ii) The upward force depends upon the density of the fluid.
(iii) The object will sink in the fluid if the density of the object is more than the density of the fluid.